> On May 30, 2024, at 4:44 AM, Hans Verkuil <hverkuil-cisco@xxxxxxxxx> wrote: > > Hi Allen, > > Some review comments: > > Regarding the Subject: instead of 'media/*:' just write 'media:'. > > On 25/04/2024 20:31, Allen Pais wrote: >> The only generic interface to execute asynchronously in the BH context is >> tasklet; however, it's marked deprecated and has some design flaws. To >> replace tasklets, BH workqueue support was recently added. A BH workqueue >> behaves similarly to regular workqueues except that the queued work items >> are executed in the BH context. >> >> This patch converts drivers/media/* from tasklet to BH workqueue. >> >> Based on the work done by Tejun Heo <tj@xxxxxxxxxx> >> Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 >> >> Signed-off-by: Allen Pais <allen.lkml@xxxxxxxxx> >> --- >> drivers/media/pci/bt8xx/bt878.c | 8 ++-- >> drivers/media/pci/bt8xx/bt878.h | 3 +- >> drivers/media/pci/bt8xx/dvb-bt8xx.c | 9 ++-- >> drivers/media/pci/ddbridge/ddbridge.h | 2 +- >> drivers/media/pci/mantis/hopper_cards.c | 2 +- >> drivers/media/pci/mantis/mantis_cards.c | 2 +- >> drivers/media/pci/mantis/mantis_common.h | 2 +- >> drivers/media/pci/mantis/mantis_dma.c | 5 ++- >> drivers/media/pci/mantis/mantis_dma.h | 2 +- >> drivers/media/pci/mantis/mantis_dvb.c | 12 +++--- >> drivers/media/pci/ngene/ngene-core.c | 23 ++++++----- >> drivers/media/pci/ngene/ngene.h | 5 ++- >> drivers/media/pci/smipcie/smipcie-main.c | 18 ++++---- >> drivers/media/pci/smipcie/smipcie.h | 3 +- >> drivers/media/pci/ttpci/budget-av.c | 3 +- >> drivers/media/pci/ttpci/budget-ci.c | 27 ++++++------ >> drivers/media/pci/ttpci/budget-core.c | 10 ++--- >> drivers/media/pci/ttpci/budget.h | 5 ++- >> drivers/media/pci/tw5864/tw5864-core.c | 2 +- >> drivers/media/pci/tw5864/tw5864-video.c | 13 +++--- >> drivers/media/pci/tw5864/tw5864.h | 7 ++-- >> drivers/media/platform/intel/pxa_camera.c | 15 +++---- >> drivers/media/platform/marvell/mcam-core.c | 11 ++--- >> drivers/media/platform/marvell/mcam-core.h | 3 +- >> .../st/sti/c8sectpfe/c8sectpfe-core.c | 15 +++---- >> .../st/sti/c8sectpfe/c8sectpfe-core.h | 2 +- >> drivers/media/radio/wl128x/fmdrv.h | 7 ++-- >> drivers/media/radio/wl128x/fmdrv_common.c | 41 ++++++++++--------- >> drivers/media/rc/mceusb.c | 2 +- >> drivers/media/usb/ttusb-dec/ttusb_dec.c | 21 +++++----- >> 30 files changed, 149 insertions(+), 131 deletions(-) >> >> diff --git a/drivers/media/pci/bt8xx/bt878.c b/drivers/media/pci/bt8xx/bt878.c >> index 90972d6952f1..ec780e037bee 100644 >> --- a/drivers/media/pci/bt8xx/bt878.c >> +++ b/drivers/media/pci/bt8xx/bt878.c >> @@ -300,8 +300,8 @@ static irqreturn_t bt878_irq(int irq, void *dev_id) >> } >> if (astat & BT878_ARISCI) { >> bt->finished_block = (stat & BT878_ARISCS) >> 28; >> - if (bt->tasklet.callback) >> - tasklet_schedule(&bt->tasklet); >> + if (bt->work.func) >> + queue_work(system_bh_wq, &bt->work); > > I would prefer that 'work' is renamed to 'bh_work'. That way it is easy > to identify it as part of system_bh_wq. This is true for the other > drivers in this patch as well, so I won't repeat this. Will do. > >> break; >> } >> count++; >> @@ -478,8 +478,8 @@ static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id) >> btwrite(0, BT878_AINT_MASK); >> bt878_num++; >> >> - if (!bt->tasklet.func) >> - tasklet_disable(&bt->tasklet); >> + if (!bt->work.func) >> + disable_work_sync(&bt->work); >> >> return 0; >> >> diff --git a/drivers/media/pci/bt8xx/bt878.h b/drivers/media/pci/bt8xx/bt878.h >> index fde8db293c54..b9ce78e5116b 100644 >> --- a/drivers/media/pci/bt8xx/bt878.h >> +++ b/drivers/media/pci/bt8xx/bt878.h >> @@ -14,6 +14,7 @@ >> #include <linux/sched.h> >> #include <linux/spinlock.h> >> #include <linux/mutex.h> >> +#include <linux/workqueue.h> >> >> #include "bt848.h" >> #include "bttv.h" >> @@ -120,7 +121,7 @@ struct bt878 { >> dma_addr_t risc_dma; >> u32 risc_pos; >> >> - struct tasklet_struct tasklet; >> + struct work_struct work; >> int shutdown; >> }; >> >> diff --git a/drivers/media/pci/bt8xx/dvb-bt8xx.c b/drivers/media/pci/bt8xx/dvb-bt8xx.c >> index 390cbba6c065..8c0e1fa764a4 100644 >> --- a/drivers/media/pci/bt8xx/dvb-bt8xx.c >> +++ b/drivers/media/pci/bt8xx/dvb-bt8xx.c >> @@ -15,6 +15,7 @@ >> #include <linux/delay.h> >> #include <linux/slab.h> >> #include <linux/i2c.h> >> +#include <linux/workqueue.h> >> >> #include <media/dmxdev.h> >> #include <media/dvbdev.h> >> @@ -39,9 +40,9 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); >> >> #define IF_FREQUENCYx6 217 /* 6 * 36.16666666667MHz */ >> >> -static void dvb_bt8xx_task(struct tasklet_struct *t) >> +static void dvb_bt8xx_task(struct work_struct *t) > > I'd rename _task to _work. Sure, will have it done. > >> { >> - struct bt878 *bt = from_tasklet(bt, t, tasklet); >> + struct bt878 *bt = from_work(bt, t, work); >> struct dvb_bt8xx_card *card = dev_get_drvdata(&bt->adapter->dev); >> >> dprintk("%d\n", card->bt->finished_block); >> @@ -782,7 +783,7 @@ static int dvb_bt8xx_load_card(struct dvb_bt8xx_card *card, u32 type) >> goto err_disconnect_frontend; >> } >> >> - tasklet_setup(&card->bt->tasklet, dvb_bt8xx_task); >> + INIT_WORK(&card->bt->work, dvb_bt8xx_task); >> >> frontend_init(card, type); >> >> @@ -922,7 +923,7 @@ static void dvb_bt8xx_remove(struct bttv_sub_device *sub) >> dprintk("dvb_bt8xx: unloading card%d\n", card->bttv_nr); >> >> bt878_stop(card->bt); >> - tasklet_kill(&card->bt->tasklet); >> + cancel_work_sync(&card->bt->work); >> dvb_net_release(&card->dvbnet); >> card->demux.dmx.remove_frontend(&card->demux.dmx, &card->fe_mem); >> card->demux.dmx.remove_frontend(&card->demux.dmx, &card->fe_hw); >> diff --git a/drivers/media/pci/ddbridge/ddbridge.h b/drivers/media/pci/ddbridge/ddbridge.h >> index f3699dbd193f..6044f3085fad 100644 >> --- a/drivers/media/pci/ddbridge/ddbridge.h >> +++ b/drivers/media/pci/ddbridge/ddbridge.h >> @@ -298,7 +298,7 @@ struct ddb_link { >> spinlock_t lock; /* lock link access */ >> struct mutex flash_mutex; /* lock flash access */ >> struct ddb_lnb lnb; >> - struct tasklet_struct tasklet; >> + struct work_struct work; > > Please keep the alignment so 'work' aligns with the other fields. Sure. > >> struct ddb_ids ids; >> >> spinlock_t temp_lock; /* lock temp chip access */ >> diff --git a/drivers/media/pci/mantis/hopper_cards.c b/drivers/media/pci/mantis/hopper_cards.c >> index c0bd5d7e148b..869ea88c4893 100644 >> --- a/drivers/media/pci/mantis/hopper_cards.c >> +++ b/drivers/media/pci/mantis/hopper_cards.c >> @@ -116,7 +116,7 @@ static irqreturn_t hopper_irq_handler(int irq, void *dev_id) >> if (stat & MANTIS_INT_RISCI) { >> dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]); >> mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28; >> - tasklet_schedule(&mantis->tasklet); >> + queue_work(system_bh_wq, &mantis->work); >> } >> if (stat & MANTIS_INT_I2CDONE) { >> dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]); >> diff --git a/drivers/media/pci/mantis/mantis_cards.c b/drivers/media/pci/mantis/mantis_cards.c >> index 906e4500d87d..cb124b19e36e 100644 >> --- a/drivers/media/pci/mantis/mantis_cards.c >> +++ b/drivers/media/pci/mantis/mantis_cards.c >> @@ -125,7 +125,7 @@ static irqreturn_t mantis_irq_handler(int irq, void *dev_id) >> if (stat & MANTIS_INT_RISCI) { >> dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]); >> mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28; >> - tasklet_schedule(&mantis->tasklet); >> + queue_work(system_bh_wq, &mantis->work); >> } >> if (stat & MANTIS_INT_I2CDONE) { >> dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]); >> diff --git a/drivers/media/pci/mantis/mantis_common.h b/drivers/media/pci/mantis/mantis_common.h >> index d88ac280226c..cf4b604b55f5 100644 >> --- a/drivers/media/pci/mantis/mantis_common.h >> +++ b/drivers/media/pci/mantis/mantis_common.h >> @@ -125,7 +125,7 @@ struct mantis_pci { >> __le32 *risc_cpu; >> dma_addr_t risc_dma; >> >> - struct tasklet_struct tasklet; >> + struct work_struct work; >> spinlock_t intmask_lock; >> >> struct i2c_adapter adapter; >> diff --git a/drivers/media/pci/mantis/mantis_dma.c b/drivers/media/pci/mantis/mantis_dma.c >> index 80c843936493..c85f9b84a2c6 100644 >> --- a/drivers/media/pci/mantis/mantis_dma.c >> +++ b/drivers/media/pci/mantis/mantis_dma.c >> @@ -15,6 +15,7 @@ >> #include <linux/signal.h> >> #include <linux/sched.h> >> #include <linux/interrupt.h> >> +#include <linux/workqueue.h> >> >> #include <media/dmxdev.h> >> #include <media/dvbdev.h> >> @@ -200,9 +201,9 @@ void mantis_dma_stop(struct mantis_pci *mantis) >> } >> >> >> -void mantis_dma_xfer(struct tasklet_struct *t) >> +void mantis_dma_xfer(struct work_struct *t) >> { >> - struct mantis_pci *mantis = from_tasklet(mantis, t, tasklet); >> + struct mantis_pci *mantis = from_work(mantis, t, work); >> struct mantis_hwconfig *config = mantis->hwconfig; >> >> while (mantis->last_block != mantis->busy_block) { >> diff --git a/drivers/media/pci/mantis/mantis_dma.h b/drivers/media/pci/mantis/mantis_dma.h >> index 37da982c9c29..5db0d3728f15 100644 >> --- a/drivers/media/pci/mantis/mantis_dma.h >> +++ b/drivers/media/pci/mantis/mantis_dma.h >> @@ -13,6 +13,6 @@ extern int mantis_dma_init(struct mantis_pci *mantis); >> extern int mantis_dma_exit(struct mantis_pci *mantis); >> extern void mantis_dma_start(struct mantis_pci *mantis); >> extern void mantis_dma_stop(struct mantis_pci *mantis); >> -extern void mantis_dma_xfer(struct tasklet_struct *t); >> +extern void mantis_dma_xfer(struct work_struct *t); >> >> #endif /* __MANTIS_DMA_H */ >> diff --git a/drivers/media/pci/mantis/mantis_dvb.c b/drivers/media/pci/mantis/mantis_dvb.c >> index c7ba4a76e608..f640635de170 100644 >> --- a/drivers/media/pci/mantis/mantis_dvb.c >> +++ b/drivers/media/pci/mantis/mantis_dvb.c >> @@ -105,7 +105,7 @@ static int mantis_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed) >> if (mantis->feeds == 1) { >> dprintk(MANTIS_DEBUG, 1, "mantis start feed & dma"); >> mantis_dma_start(mantis); >> - tasklet_enable(&mantis->tasklet); >> + enable_and_queue_work(system_bh_wq, &mantis->work); >> } >> >> return mantis->feeds; >> @@ -125,7 +125,7 @@ static int mantis_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) >> mantis->feeds--; >> if (mantis->feeds == 0) { >> dprintk(MANTIS_DEBUG, 1, "mantis stop feed and dma"); >> - tasklet_disable(&mantis->tasklet); >> + disable_work_sync(&mantis->work); >> mantis_dma_stop(mantis); >> } >> >> @@ -205,8 +205,8 @@ int mantis_dvb_init(struct mantis_pci *mantis) >> } >> >> dvb_net_init(&mantis->dvb_adapter, &mantis->dvbnet, &mantis->demux.dmx); >> - tasklet_setup(&mantis->tasklet, mantis_dma_xfer); >> - tasklet_disable(&mantis->tasklet); >> + INIT_WORK(&mantis->bh, mantis_dma_xfer); > > This fails to compile: mantis->bh -> mantis->work Will fix it. > >> + disable_work_sync(&mantis->work); >> if (mantis->hwconfig) { >> result = config->frontend_init(mantis, mantis->fe); >> if (result < 0) { >> @@ -235,7 +235,7 @@ int mantis_dvb_init(struct mantis_pci *mantis) >> >> /* Error conditions .. */ >> err5: >> - tasklet_kill(&mantis->tasklet); >> + cancel_work_sync(&mantis->work); >> dvb_net_release(&mantis->dvbnet); >> if (mantis->fe) { >> dvb_unregister_frontend(mantis->fe); >> @@ -273,7 +273,7 @@ int mantis_dvb_exit(struct mantis_pci *mantis) >> dvb_frontend_detach(mantis->fe); >> } >> >> - tasklet_kill(&mantis->tasklet); >> + cancel_work_sync(&mantis->work); >> dvb_net_release(&mantis->dvbnet); >> >> mantis->demux.dmx.remove_frontend(&mantis->demux.dmx, &mantis->fe_mem); >> diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c >> index 7481f553f959..5211d6796748 100644 >> --- a/drivers/media/pci/ngene/ngene-core.c >> +++ b/drivers/media/pci/ngene/ngene-core.c >> @@ -21,6 +21,7 @@ >> #include <linux/byteorder/generic.h> >> #include <linux/firmware.h> >> #include <linux/vmalloc.h> >> +#include <linux/workqueue.h> >> >> #include "ngene.h" >> >> @@ -50,9 +51,9 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); >> /* nGene interrupt handler **************************************************/ >> /****************************************************************************/ >> >> -static void event_tasklet(struct tasklet_struct *t) >> +static void event_work(struct work_struct *t) >> { >> - struct ngene *dev = from_tasklet(dev, t, event_tasklet); >> + struct ngene *dev = from_work(dev, t, event_work); > > So this becomes event_bh_work... Yes, will fix it. > >> >> while (dev->EventQueueReadIndex != dev->EventQueueWriteIndex) { >> struct EVENT_BUFFER Event = >> @@ -68,9 +69,9 @@ static void event_tasklet(struct tasklet_struct *t) >> } >> } >> >> -static void demux_tasklet(struct tasklet_struct *t) >> +static void demux_work(struct work_struct *t) >> { >> - struct ngene_channel *chan = from_tasklet(chan, t, demux_tasklet); >> + struct ngene_channel *chan = from_work(chan, t, demux_work); > > ...amd this demux_bh_work, etc. Sure. > >> struct device *pdev = &chan->dev->pci_dev->dev; >> struct SBufferHeader *Cur = chan->nextBuffer; >> >> @@ -204,7 +205,7 @@ static irqreturn_t irq_handler(int irq, void *dev_id) >> dev->EventQueueOverflowFlag = 1; >> } >> dev->EventBuffer->EventStatus &= ~0x80; >> - tasklet_schedule(&dev->event_tasklet); >> + queue_work(system_bh_wq, &dev->event_work); >> rc = IRQ_HANDLED; >> } >> >> @@ -217,8 +218,8 @@ static irqreturn_t irq_handler(int irq, void *dev_id) >> ngeneBuffer.SR.Flags & 0xC0) == 0x80) { >> dev->channel[i].nextBuffer-> >> ngeneBuffer.SR.Flags |= 0x40; >> - tasklet_schedule( >> - &dev->channel[i].demux_tasklet); >> + queue_work(system_bh_wq, >> + &dev->channel[i].demux_work); >> rc = IRQ_HANDLED; >> } >> } >> @@ -1181,7 +1182,7 @@ static void ngene_init(struct ngene *dev) >> struct device *pdev = &dev->pci_dev->dev; >> int i; >> >> - tasklet_setup(&dev->event_tasklet, event_tasklet); >> + INIT_WORK(&dev->event_work, event_work); >> >> memset_io(dev->iomem + 0xc000, 0x00, 0x220); >> memset_io(dev->iomem + 0xc400, 0x00, 0x100); >> @@ -1395,7 +1396,7 @@ static void release_channel(struct ngene_channel *chan) >> if (chan->running) >> set_transfer(chan, 0); >> >> - tasklet_kill(&chan->demux_tasklet); >> + cancel_work_sync(&chan->demux_work); >> >> if (chan->ci_dev) { >> dvb_unregister_device(chan->ci_dev); >> @@ -1445,7 +1446,7 @@ static int init_channel(struct ngene_channel *chan) >> struct ngene_info *ni = dev->card_info; >> int io = ni->io_type[nr]; >> >> - tasklet_setup(&chan->demux_tasklet, demux_tasklet); >> + INIT_WORK(&chan->demux_work, demux_work); >> chan->users = 0; >> chan->type = io; >> chan->mode = chan->type; /* for now only one mode */ >> @@ -1647,7 +1648,7 @@ void ngene_remove(struct pci_dev *pdev) >> struct ngene *dev = pci_get_drvdata(pdev); >> int i; >> >> - tasklet_kill(&dev->event_tasklet); >> + cancel_work_sync(&dev->event_work); >> for (i = MAX_STREAM - 1; i >= 0; i--) >> release_channel(&dev->channel[i]); >> if (dev->ci.en) >> diff --git a/drivers/media/pci/ngene/ngene.h b/drivers/media/pci/ngene/ngene.h >> index d1d7da84cd9d..c2a23f6dbe09 100644 >> --- a/drivers/media/pci/ngene/ngene.h >> +++ b/drivers/media/pci/ngene/ngene.h >> @@ -16,6 +16,7 @@ >> #include <linux/scatterlist.h> >> >> #include <linux/dvb/frontend.h> >> +#include <linux/workqueue.h> >> >> #include <media/dmxdev.h> >> #include <media/dvbdev.h> >> @@ -621,7 +622,7 @@ struct ngene_channel { >> int users; >> struct video_device *v4l_dev; >> struct dvb_device *ci_dev; >> - struct tasklet_struct demux_tasklet; >> + struct work_struct demux_work; > > Alignment Will fix it. > >> >> struct SBufferHeader *nextBuffer; >> enum KSSTATE State; >> @@ -717,7 +718,7 @@ struct ngene { >> struct EVENT_BUFFER EventQueue[EVENT_QUEUE_SIZE]; >> int EventQueueOverflowCount; >> int EventQueueOverflowFlag; >> - struct tasklet_struct event_tasklet; >> + struct work_struct event_work; > > Alignment. Please check this patch for other cases. > >> struct EVENT_BUFFER *EventBuffer; >> int EventQueueWriteIndex; >> int EventQueueReadIndex; >> diff --git a/drivers/media/pci/smipcie/smipcie-main.c b/drivers/media/pci/smipcie/smipcie-main.c >> index 0c300d019d9c..7da6bb55660b 100644 >> --- a/drivers/media/pci/smipcie/smipcie-main.c >> +++ b/drivers/media/pci/smipcie/smipcie-main.c >> @@ -279,10 +279,10 @@ static void smi_port_clearInterrupt(struct smi_port *port) >> (port->_dmaInterruptCH0 | port->_dmaInterruptCH1)); >> } >> >> -/* tasklet handler: DMA data to dmx.*/ >> -static void smi_dma_xfer(struct tasklet_struct *t) >> +/* work handler: DMA data to dmx.*/ >> +static void smi_dma_xfer(struct work_struct *t) >> { >> - struct smi_port *port = from_tasklet(port, t, tasklet); >> + struct smi_port *port = from_work(port, t, work); >> struct smi_dev *dev = port->dev; >> u32 intr_status, finishedData, dmaManagement; >> u8 dmaChan0State, dmaChan1State; >> @@ -426,8 +426,8 @@ static int smi_port_init(struct smi_port *port, int dmaChanUsed) >> } >> >> smi_port_disableInterrupt(port); >> - tasklet_setup(&port->tasklet, smi_dma_xfer); >> - tasklet_disable(&port->tasklet); >> + INIT_WORK(&port->work, smi_dma_xfer); >> + disable_work_sync(&port->work); >> port->enable = 1; >> return 0; >> err: >> @@ -438,7 +438,7 @@ static int smi_port_init(struct smi_port *port, int dmaChanUsed) >> static void smi_port_exit(struct smi_port *port) >> { >> smi_port_disableInterrupt(port); >> - tasklet_kill(&port->tasklet); >> + cancel_work_sync(&port->work); >> smi_port_dma_free(port); >> port->enable = 0; >> } >> @@ -452,7 +452,7 @@ static int smi_port_irq(struct smi_port *port, u32 int_status) >> smi_port_disableInterrupt(port); >> port->_int_status = int_status; >> smi_port_clearInterrupt(port); >> - tasklet_schedule(&port->tasklet); >> + queue_work(system_bh_wq, &port->work); >> handled = 1; >> } >> return handled; >> @@ -823,7 +823,7 @@ static int smi_start_feed(struct dvb_demux_feed *dvbdmxfeed) >> smi_port_clearInterrupt(port); >> smi_port_enableInterrupt(port); >> smi_write(port->DMA_MANAGEMENT, dmaManagement); >> - tasklet_enable(&port->tasklet); >> + enable_and_queue_work(system_bh_wq, &port->work); >> } >> return port->users; >> } >> @@ -837,7 +837,7 @@ static int smi_stop_feed(struct dvb_demux_feed *dvbdmxfeed) >> if (--port->users) >> return port->users; >> >> - tasklet_disable(&port->tasklet); >> + disable_work_sync(&port->work); >> smi_port_disableInterrupt(port); >> smi_clear(port->DMA_MANAGEMENT, 0x30003); >> return 0; >> diff --git a/drivers/media/pci/smipcie/smipcie.h b/drivers/media/pci/smipcie/smipcie.h >> index 2b5e0154814c..f124d2cdead6 100644 >> --- a/drivers/media/pci/smipcie/smipcie.h >> +++ b/drivers/media/pci/smipcie/smipcie.h >> @@ -17,6 +17,7 @@ >> #include <linux/pci.h> >> #include <linux/dma-mapping.h> >> #include <linux/slab.h> >> +#include <linux/workqueue.h> >> #include <media/rc-core.h> >> >> #include <media/demux.h> >> @@ -257,7 +258,7 @@ struct smi_port { >> u32 _dmaInterruptCH0; >> u32 _dmaInterruptCH1; >> u32 _int_status; >> - struct tasklet_struct tasklet; >> + struct work_struct work; >> /* dvb */ >> struct dmx_frontend hw_frontend; >> struct dmx_frontend mem_frontend; >> diff --git a/drivers/media/pci/ttpci/budget-av.c b/drivers/media/pci/ttpci/budget-av.c >> index a47c5850ef87..6e43b1a01191 100644 >> --- a/drivers/media/pci/ttpci/budget-av.c >> +++ b/drivers/media/pci/ttpci/budget-av.c >> @@ -37,6 +37,7 @@ >> #include <linux/interrupt.h> >> #include <linux/input.h> >> #include <linux/spinlock.h> >> +#include <linux/workqueue.h> >> >> #include <media/dvb_ca_en50221.h> >> >> @@ -55,7 +56,7 @@ struct budget_av { >> struct video_device vd; >> int cur_input; >> int has_saa7113; >> - struct tasklet_struct ciintf_irq_tasklet; >> + struct work_struct ciintf_irq_work; >> int slot_status; >> struct dvb_ca_en50221 ca; >> u8 reinitialise_demod:1; >> diff --git a/drivers/media/pci/ttpci/budget-ci.c b/drivers/media/pci/ttpci/budget-ci.c >> index 66e1a004ee43..11e0ed62707e 100644 >> --- a/drivers/media/pci/ttpci/budget-ci.c >> +++ b/drivers/media/pci/ttpci/budget-ci.c >> @@ -17,6 +17,7 @@ >> #include <linux/slab.h> >> #include <linux/interrupt.h> >> #include <linux/spinlock.h> >> +#include <linux/workqueue.h> >> #include <media/rc-core.h> >> >> #include "budget.h" >> @@ -80,7 +81,7 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); >> >> struct budget_ci_ir { >> struct rc_dev *dev; >> - struct tasklet_struct msp430_irq_tasklet; >> + struct work_struct msp430_irq_work; >> char name[72]; /* 40 + 32 for (struct saa7146_dev).name */ >> char phys[32]; >> int rc5_device; >> @@ -91,7 +92,7 @@ struct budget_ci_ir { >> >> struct budget_ci { >> struct budget budget; >> - struct tasklet_struct ciintf_irq_tasklet; >> + struct work_struct ciintf_irq_work; >> int slot_status; >> int ci_irq; >> struct dvb_ca_en50221 ca; >> @@ -99,9 +100,9 @@ struct budget_ci { >> u8 tuner_pll_address; /* used for philips_tdm1316l configs */ >> }; >> >> -static void msp430_ir_interrupt(struct tasklet_struct *t) >> +static void msp430_ir_interrupt(struct work_struct *t) >> { >> - struct budget_ci_ir *ir = from_tasklet(ir, t, msp430_irq_tasklet); >> + struct budget_ci_ir *ir = from_work(ir, t, msp430_irq_work); >> struct budget_ci *budget_ci = container_of(ir, typeof(*budget_ci), ir); >> struct rc_dev *dev = budget_ci->ir.dev; >> u32 command = ttpci_budget_debiread(&budget_ci->budget, DEBINOSWAP, DEBIADDR_IR, 2, 1, 0) >> 8; >> @@ -230,7 +231,7 @@ static int msp430_ir_init(struct budget_ci *budget_ci) >> >> budget_ci->ir.dev = dev; >> >> - tasklet_setup(&budget_ci->ir.msp430_irq_tasklet, msp430_ir_interrupt); >> + INIT_WORK(&budget_ci->ir.msp430_irq_work, msp430_ir_interrupt); >> >> SAA7146_IER_ENABLE(saa, MASK_06); >> saa7146_setgpio(saa, 3, SAA7146_GPIO_IRQHI); >> @@ -244,7 +245,7 @@ static void msp430_ir_deinit(struct budget_ci *budget_ci) >> >> SAA7146_IER_DISABLE(saa, MASK_06); >> saa7146_setgpio(saa, 3, SAA7146_GPIO_INPUT); >> - tasklet_kill(&budget_ci->ir.msp430_irq_tasklet); >> + cancel_work_sync(&budget_ci->ir.msp430_irq_work); >> >> rc_unregister_device(budget_ci->ir.dev); >> } >> @@ -348,10 +349,10 @@ static int ciintf_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot) >> return 0; >> } >> >> -static void ciintf_interrupt(struct tasklet_struct *t) >> +static void ciintf_interrupt(struct work_struct *t) >> { >> - struct budget_ci *budget_ci = from_tasklet(budget_ci, t, >> - ciintf_irq_tasklet); >> + struct budget_ci *budget_ci = from_work(budget_ci, t, >> + ciintf_irq_work); >> struct saa7146_dev *saa = budget_ci->budget.dev; >> unsigned int flags; >> >> @@ -492,7 +493,7 @@ static int ciintf_init(struct budget_ci *budget_ci) >> >> // Setup CI slot IRQ >> if (budget_ci->ci_irq) { >> - tasklet_setup(&budget_ci->ciintf_irq_tasklet, ciintf_interrupt); >> + INIT_WORK(&budget_ci->ciintf_irq_work, ciintf_interrupt); >> if (budget_ci->slot_status != SLOTSTATUS_NONE) { >> saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQLO); >> } else { >> @@ -532,7 +533,7 @@ static void ciintf_deinit(struct budget_ci *budget_ci) >> if (budget_ci->ci_irq) { >> SAA7146_IER_DISABLE(saa, MASK_03); >> saa7146_setgpio(saa, 0, SAA7146_GPIO_INPUT); >> - tasklet_kill(&budget_ci->ciintf_irq_tasklet); >> + cancel_work_sync(&budget_ci->ciintf_irq_work); >> } >> >> // reset interface >> @@ -558,13 +559,13 @@ static void budget_ci_irq(struct saa7146_dev *dev, u32 * isr) >> dprintk(8, "dev: %p, budget_ci: %p\n", dev, budget_ci); >> >> if (*isr & MASK_06) >> - tasklet_schedule(&budget_ci->ir.msp430_irq_tasklet); >> + queue_work(system_bh_wq, &budget_ci->ir.msp430_irq_work); >> >> if (*isr & MASK_10) >> ttpci_budget_irq10_handler(dev, isr); >> >> if ((*isr & MASK_03) && (budget_ci->budget.ci_present) && (budget_ci->ci_irq)) >> - tasklet_schedule(&budget_ci->ciintf_irq_tasklet); >> + queue_work(system_bh_wq, &budget_ci->ciintf_irq_work); >> } >> >> static u8 philips_su1278_tt_inittab[] = { >> diff --git a/drivers/media/pci/ttpci/budget-core.c b/drivers/media/pci/ttpci/budget-core.c >> index 25f44c3eebf3..3443c12dc9f2 100644 >> --- a/drivers/media/pci/ttpci/budget-core.c >> +++ b/drivers/media/pci/ttpci/budget-core.c >> @@ -171,9 +171,9 @@ static int budget_read_fe_status(struct dvb_frontend *fe, >> return ret; >> } >> >> -static void vpeirq(struct tasklet_struct *t) >> +static void vpeirq(struct work_struct *t) >> { >> - struct budget *budget = from_tasklet(budget, t, vpe_tasklet); >> + struct budget *budget = from_work(budget, t, vpe_work); >> u8 *mem = (u8 *) (budget->grabbing); >> u32 olddma = budget->ttbp; >> u32 newdma = saa7146_read(budget->dev, PCI_VDP3); >> @@ -520,7 +520,7 @@ int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev, >> /* upload all */ >> saa7146_write(dev, GPIO_CTRL, 0x000000); >> >> - tasklet_setup(&budget->vpe_tasklet, vpeirq); >> + INIT_WORK(&budget->vpe_work, vpeirq); >> >> /* frontend power on */ >> if (bi->type != BUDGET_FS_ACTIVY) >> @@ -557,7 +557,7 @@ int ttpci_budget_deinit(struct budget *budget) >> >> budget_unregister(budget); >> >> - tasklet_kill(&budget->vpe_tasklet); >> + cancel_work_sync(&budget->vpe_work); >> >> saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); >> >> @@ -575,7 +575,7 @@ void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr) >> dprintk(8, "dev: %p, budget: %p\n", dev, budget); >> >> if (*isr & MASK_10) >> - tasklet_schedule(&budget->vpe_tasklet); >> + queue_work(system_bh_wq, &budget->vpe_work); >> } >> >> void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port) >> diff --git a/drivers/media/pci/ttpci/budget.h b/drivers/media/pci/ttpci/budget.h >> index bd87432e6cde..a3ee75e326b4 100644 >> --- a/drivers/media/pci/ttpci/budget.h >> +++ b/drivers/media/pci/ttpci/budget.h >> @@ -12,6 +12,7 @@ >> >> #include <linux/module.h> >> #include <linux/mutex.h> >> +#include <linux/workqueue.h> >> >> #include <media/drv-intf/saa7146.h> >> >> @@ -49,8 +50,8 @@ struct budget { >> unsigned char *grabbing; >> struct saa7146_pgtable pt; >> >> - struct tasklet_struct fidb_tasklet; >> - struct tasklet_struct vpe_tasklet; >> + struct work_struct fidb_work; >> + struct work_struct vpe_work; >> >> struct dmxdev dmxdev; >> struct dvb_demux demux; >> diff --git a/drivers/media/pci/tw5864/tw5864-core.c b/drivers/media/pci/tw5864/tw5864-core.c >> index 560ff1ddcc83..a58c268e94a8 100644 >> --- a/drivers/media/pci/tw5864/tw5864-core.c >> +++ b/drivers/media/pci/tw5864/tw5864-core.c >> @@ -144,7 +144,7 @@ static void tw5864_h264_isr(struct tw5864_dev *dev) >> cur_frame->gop_seqno = input->frame_gop_seqno; >> >> dev->h264_buf_w_index = next_frame_index; >> - tasklet_schedule(&dev->tasklet); >> + queue_work(system_bh_wq, &dev->work); >> >> cur_frame = next_frame; >> >> diff --git a/drivers/media/pci/tw5864/tw5864-video.c b/drivers/media/pci/tw5864/tw5864-video.c >> index 8b1aae4b6319..ac2249626506 100644 >> --- a/drivers/media/pci/tw5864/tw5864-video.c >> +++ b/drivers/media/pci/tw5864/tw5864-video.c >> @@ -6,6 +6,7 @@ >> */ >> >> #include <linux/module.h> >> +#include <linux/workqueue.h> >> #include <media/v4l2-common.h> >> #include <media/v4l2-event.h> >> #include <media/videobuf2-dma-contig.h> >> @@ -175,7 +176,7 @@ static const unsigned int intra4x4_lambda3[] = { >> static v4l2_std_id tw5864_get_v4l2_std(enum tw5864_vid_std std); >> static enum tw5864_vid_std tw5864_from_v4l2_std(v4l2_std_id v4l2_std); >> >> -static void tw5864_handle_frame_task(struct tasklet_struct *t); >> +static void tw5864_handle_frame_task(struct work_struct *t); > > I think _task should be renamed to _work. > >> static void tw5864_handle_frame(struct tw5864_h264_frame *frame); >> static void tw5864_frame_interval_set(struct tw5864_input *input); >> >> @@ -1062,7 +1063,7 @@ int tw5864_video_init(struct tw5864_dev *dev, int *video_nr) >> dev->irqmask |= TW5864_INTR_VLC_DONE | TW5864_INTR_TIMER; >> tw5864_irqmask_apply(dev); >> >> - tasklet_setup(&dev->tasklet, tw5864_handle_frame_task); >> + INIT_WORK(&dev->work, tw5864_handle_frame_task); >> >> for (i = 0; i < TW5864_INPUTS; i++) { >> dev->inputs[i].root = dev; >> @@ -1079,7 +1080,7 @@ int tw5864_video_init(struct tw5864_dev *dev, int *video_nr) >> for (i = last_input_nr_registered; i >= 0; i--) >> tw5864_video_input_fini(&dev->inputs[i]); >> >> - tasklet_kill(&dev->tasklet); >> + cancel_work_sync(&dev->work); >> >> free_dma: >> for (i = last_dma_allocated; i >= 0; i--) { >> @@ -1198,7 +1199,7 @@ void tw5864_video_fini(struct tw5864_dev *dev) >> { >> int i; >> >> - tasklet_kill(&dev->tasklet); >> + cancel_work_sync(&dev->work); >> >> for (i = 0; i < TW5864_INPUTS; i++) >> tw5864_video_input_fini(&dev->inputs[i]); >> @@ -1315,9 +1316,9 @@ static int tw5864_is_motion_triggered(struct tw5864_h264_frame *frame) >> return detected; >> } >> >> -static void tw5864_handle_frame_task(struct tasklet_struct *t) >> +static void tw5864_handle_frame_task(struct work_struct *t) >> { >> - struct tw5864_dev *dev = from_tasklet(dev, t, tasklet); >> + struct tw5864_dev *dev = from_work(dev, t, work); >> unsigned long flags; >> int batch_size = H264_BUF_CNT; >> >> diff --git a/drivers/media/pci/tw5864/tw5864.h b/drivers/media/pci/tw5864/tw5864.h >> index a8b6fbd5b710..278373859098 100644 >> --- a/drivers/media/pci/tw5864/tw5864.h >> +++ b/drivers/media/pci/tw5864/tw5864.h >> @@ -12,6 +12,7 @@ >> #include <linux/mutex.h> >> #include <linux/io.h> >> #include <linux/interrupt.h> >> +#include <linux/workqueue.h> >> >> #include <media/v4l2-common.h> >> #include <media/v4l2-ioctl.h> >> @@ -85,7 +86,7 @@ struct tw5864_input { >> int nr; /* input number */ >> struct tw5864_dev *root; >> struct mutex lock; /* used for vidq and vdev */ >> - spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */ >> + spinlock_t slock; /* used for sync between ISR, work & V4L2 API */ >> struct video_device vdev; >> struct v4l2_ctrl_handler hdl; >> struct vb2_queue vidq; >> @@ -142,7 +143,7 @@ struct tw5864_h264_frame { >> >> /* global device status */ >> struct tw5864_dev { >> - spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */ >> + spinlock_t slock; /* used for sync between ISR, work & V4L2 API */ >> struct v4l2_device v4l2_dev; >> struct tw5864_input inputs[TW5864_INPUTS]; >> #define H264_BUF_CNT 4 >> @@ -150,7 +151,7 @@ struct tw5864_dev { >> int h264_buf_r_index; >> int h264_buf_w_index; >> >> - struct tasklet_struct tasklet; >> + struct work_struct work; >> >> int encoder_busy; >> /* Input number to check next for ready raw picture (in RR fashion) */ >> diff --git a/drivers/media/platform/intel/pxa_camera.c b/drivers/media/platform/intel/pxa_camera.c >> index d904952bf00e..fdbf363237d6 100644 >> --- a/drivers/media/platform/intel/pxa_camera.c >> +++ b/drivers/media/platform/intel/pxa_camera.c >> @@ -43,6 +43,7 @@ >> #include <linux/videodev2.h> >> >> #include <linux/platform_data/media/camera-pxa.h> >> +#include <linux/workqueue.h> >> >> #define PXA_CAM_VERSION "0.0.6" >> #define PXA_CAM_DRV_NAME "pxa27x-camera" >> @@ -683,7 +684,7 @@ struct pxa_camera_dev { >> unsigned int buf_sequence; >> >> struct pxa_buffer *active; >> - struct tasklet_struct task_eof; >> + struct work_struct task_eof; > > This should be renamed to eof_bh_work for consistency. Will do. > >> >> u32 save_cicr[5]; >> }; >> @@ -1146,9 +1147,9 @@ static void pxa_camera_deactivate(struct pxa_camera_dev *pcdev) >> clk_disable_unprepare(pcdev->clk); >> } >> >> -static void pxa_camera_eof(struct tasklet_struct *t) >> +static void pxa_camera_eof(struct work_struct *t) >> { >> - struct pxa_camera_dev *pcdev = from_tasklet(pcdev, t, task_eof); >> + struct pxa_camera_dev *pcdev = from_work(pcdev, t, task_eof); >> unsigned long cifr; >> struct pxa_buffer *buf; >> >> @@ -1185,7 +1186,7 @@ static irqreturn_t pxa_camera_irq(int irq, void *data) >> if (status & CISR_EOF) { >> cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_EOFM; >> __raw_writel(cicr0, pcdev->base + CICR0); >> - tasklet_schedule(&pcdev->task_eof); >> + queue_work(system_bh_wq, &pcdev->task_eof); >> } >> >> return IRQ_HANDLED; >> @@ -2383,7 +2384,7 @@ static int pxa_camera_probe(struct platform_device *pdev) >> } >> } >> >> - tasklet_setup(&pcdev->task_eof, pxa_camera_eof); >> + INIT_WORK(&pcdev->task_eof, pxa_camera_eof); >> >> pxa_camera_activate(pcdev); >> >> @@ -2409,7 +2410,7 @@ static int pxa_camera_probe(struct platform_device *pdev) >> return 0; >> exit_deactivate: >> pxa_camera_deactivate(pcdev); >> - tasklet_kill(&pcdev->task_eof); >> + cancel_work_sync(&pcdev->task_eof); >> exit_free_dma: >> dma_release_channel(pcdev->dma_chans[2]); >> exit_free_dma_u: >> @@ -2428,7 +2429,7 @@ static void pxa_camera_remove(struct platform_device *pdev) >> struct pxa_camera_dev *pcdev = platform_get_drvdata(pdev); >> >> pxa_camera_deactivate(pcdev); >> - tasklet_kill(&pcdev->task_eof); >> + cancel_work_sync(&pcdev->task_eof); >> dma_release_channel(pcdev->dma_chans[0]); >> dma_release_channel(pcdev->dma_chans[1]); >> dma_release_channel(pcdev->dma_chans[2]); >> diff --git a/drivers/media/platform/marvell/mcam-core.c b/drivers/media/platform/marvell/mcam-core.c >> index 66688b4aece5..d6b96a7039be 100644 >> --- a/drivers/media/platform/marvell/mcam-core.c >> +++ b/drivers/media/platform/marvell/mcam-core.c >> @@ -25,6 +25,7 @@ >> #include <linux/clk-provider.h> >> #include <linux/videodev2.h> >> #include <linux/pm_runtime.h> >> +#include <linux/workqueue.h> >> #include <media/v4l2-device.h> >> #include <media/v4l2-ioctl.h> >> #include <media/v4l2-ctrls.h> >> @@ -439,9 +440,9 @@ static void mcam_ctlr_dma_vmalloc(struct mcam_camera *cam) >> /* >> * Copy data out to user space in the vmalloc case >> */ >> -static void mcam_frame_tasklet(struct tasklet_struct *t) >> +static void mcam_frame_work(struct work_struct *t) >> { >> - struct mcam_camera *cam = from_tasklet(cam, t, s_tasklet); >> + struct mcam_camera *cam = from_work(cam, t, s_work); >> int i; >> unsigned long flags; >> struct mcam_vb_buffer *buf; >> @@ -480,7 +481,7 @@ static void mcam_frame_tasklet(struct tasklet_struct *t) >> >> >> /* >> - * Make sure our allocated buffers are up to the task. >> + * Make sure our allocated buffers are up to the work. > > Drop this change: "up to the task" is an English expression, it doesn't refer > to a tasklet :-) Will have it removed. > >> */ >> static int mcam_check_dma_buffers(struct mcam_camera *cam) >> { >> @@ -493,7 +494,7 @@ static int mcam_check_dma_buffers(struct mcam_camera *cam) >> >> static void mcam_vmalloc_done(struct mcam_camera *cam, int frame) >> { >> - tasklet_schedule(&cam->s_tasklet); >> + queue_work(system_bh_wq, &cam->s_work); >> } >> >> #else /* MCAM_MODE_VMALLOC */ >> @@ -1305,7 +1306,7 @@ static int mcam_setup_vb2(struct mcam_camera *cam) >> break; >> case B_vmalloc: >> #ifdef MCAM_MODE_VMALLOC >> - tasklet_setup(&cam->s_tasklet, mcam_frame_tasklet); >> + INIT_WORK(&cam->s_work, mcam_frame_work); >> vq->ops = &mcam_vb2_ops; >> vq->mem_ops = &vb2_vmalloc_memops; >> cam->dma_setup = mcam_ctlr_dma_vmalloc; >> diff --git a/drivers/media/platform/marvell/mcam-core.h b/drivers/media/platform/marvell/mcam-core.h >> index 51e66db45af6..0d4b953dbb23 100644 >> --- a/drivers/media/platform/marvell/mcam-core.h >> +++ b/drivers/media/platform/marvell/mcam-core.h >> @@ -9,6 +9,7 @@ >> >> #include <linux/list.h> >> #include <linux/clk-provider.h> >> +#include <linux/workqueue.h> >> #include <media/v4l2-common.h> >> #include <media/v4l2-ctrls.h> >> #include <media/v4l2-dev.h> >> @@ -167,7 +168,7 @@ struct mcam_camera { >> unsigned int dma_buf_size; /* allocated size */ >> void *dma_bufs[MAX_DMA_BUFS]; /* Internal buffer addresses */ >> dma_addr_t dma_handles[MAX_DMA_BUFS]; /* Buffer bus addresses */ >> - struct tasklet_struct s_tasklet; >> + struct work_struct s_work; >> #endif >> unsigned int sequence; /* Frame sequence number */ >> unsigned int buf_seq[MAX_DMA_BUFS]; /* Sequence for individual bufs */ >> diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c >> index e4cf27b5a072..dc817cff4121 100644 >> --- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c >> +++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c >> @@ -33,6 +33,7 @@ >> #include <linux/time.h> >> #include <linux/usb.h> >> #include <linux/wait.h> >> +#include <linux/workqueue.h> >> >> #include "c8sectpfe-common.h" >> #include "c8sectpfe-core.h" >> @@ -73,16 +74,16 @@ static void c8sectpfe_timer_interrupt(struct timer_list *t) >> >> /* is this descriptor initialised and TP enabled */ >> if (channel->irec && readl(channel->irec + DMA_PRDS_TPENABLE)) >> - tasklet_schedule(&channel->tsklet); >> + queue_work(system_bh_wq, &channel->work); >> } >> >> fei->timer.expires = jiffies + msecs_to_jiffies(POLL_MSECS); >> add_timer(&fei->timer); >> } >> >> -static void channel_swdemux_tsklet(struct tasklet_struct *t) >> +static void channel_swdemux_work(struct work_struct *t) >> { >> - struct channel_info *channel = from_tasklet(channel, t, tsklet); >> + struct channel_info *channel = from_work(channel, t, work); >> struct c8sectpfei *fei; >> unsigned long wp, rp; >> int pos, num_packets, n, size; >> @@ -211,7 +212,7 @@ static int c8sectpfe_start_feed(struct dvb_demux_feed *dvbdmxfeed) >> >> dev_dbg(fei->dev, "Starting channel=%p\n", channel); >> >> - tasklet_setup(&channel->tsklet, channel_swdemux_tsklet); >> + INIT_WORK(&channel->work, channel_swdemux_work); >> >> /* Reset the internal inputblock sram pointers */ >> writel(channel->fifo, >> @@ -304,7 +305,7 @@ static int c8sectpfe_stop_feed(struct dvb_demux_feed *dvbdmxfeed) >> /* disable this channels descriptor */ >> writel(0, channel->irec + DMA_PRDS_TPENABLE); >> >> - tasklet_disable(&channel->tsklet); >> + disable_work_sync(&channel->work); >> >> /* now request memdma channel goes idle */ >> idlereq = (1 << channel->tsin_id) | IDLEREQ; >> @@ -631,8 +632,8 @@ static int configure_memdma_and_inputblock(struct c8sectpfei *fei, >> writel(tsin->back_buffer_busaddr, tsin->irec + DMA_PRDS_BUSWP_TP(0)); >> writel(tsin->back_buffer_busaddr, tsin->irec + DMA_PRDS_BUSRP_TP(0)); >> >> - /* initialize tasklet */ >> - tasklet_setup(&tsin->tsklet, channel_swdemux_tsklet); >> + /* initialize work */ >> + INIT_WORK(&tsin->work, channel_swdemux_work); >> >> return 0; >> >> diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h >> index bf377cc82225..284d62a90987 100644 >> --- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h >> +++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h >> @@ -51,7 +51,7 @@ struct channel_info { >> unsigned long fifo; >> >> struct completion idle_completion; >> - struct tasklet_struct tsklet; >> + struct work_struct work; >> >> struct c8sectpfei *fei; >> void __iomem *irec; >> diff --git a/drivers/media/radio/wl128x/fmdrv.h b/drivers/media/radio/wl128x/fmdrv.h >> index da8920169df8..85282f638c4a 100644 >> --- a/drivers/media/radio/wl128x/fmdrv.h >> +++ b/drivers/media/radio/wl128x/fmdrv.h >> @@ -15,6 +15,7 @@ >> #include <sound/core.h> >> #include <sound/initval.h> >> #include <linux/timer.h> >> +#include <linux/workqueue.h> >> #include <media/v4l2-ioctl.h> >> #include <media/v4l2-common.h> >> #include <media/v4l2-device.h> >> @@ -200,15 +201,15 @@ struct fmdev { >> int streg_cbdata; /* status of ST registration */ >> >> struct sk_buff_head rx_q; /* RX queue */ >> - struct tasklet_struct rx_task; /* RX Tasklet */ >> + struct work_struct rx_task; /* RX Work */ > > Rename to rx_bh_work Will do. > >> >> struct sk_buff_head tx_q; /* TX queue */ >> - struct tasklet_struct tx_task; /* TX Tasklet */ >> + struct work_struct tx_task; /* TX Work */ > > Ditto. Sure. > >> unsigned long last_tx_jiffies; /* Timestamp of last pkt sent */ >> atomic_t tx_cnt; /* Number of packets can send at a time */ >> >> struct sk_buff *resp_skb; /* Response from the chip */ >> - /* Main task completion handler */ >> + /* Main work completion handler */ >> struct completion maintask_comp; >> /* Opcode of last command sent to the chip */ >> u8 pre_op; >> diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c >> index 3da8e5102bec..2528ce6c1cda 100644 >> --- a/drivers/media/radio/wl128x/fmdrv_common.c >> +++ b/drivers/media/radio/wl128x/fmdrv_common.c >> @@ -9,7 +9,7 @@ >> * one Channel-8 command to be sent to the chip). >> * 2) Sending each Channel-8 command to the chip and reading >> * response back over Shared Transport. >> - * 3) Managing TX and RX Queues and Tasklets. >> + * 3) Managing TX and RX Queues and Work. >> * 4) Handling FM Interrupt packet and taking appropriate action. >> * 5) Loading FM firmware to the chip (common, FM TX, and FM RX >> * firmware files based on mode selection) >> @@ -29,6 +29,7 @@ >> #include "fmdrv_v4l2.h" >> #include "fmdrv_common.h" >> #include <linux/ti_wilink_st.h> >> +#include <linux/workqueue.h> >> #include "fmdrv_rx.h" >> #include "fmdrv_tx.h" >> >> @@ -244,10 +245,10 @@ void fmc_update_region_info(struct fmdev *fmdev, u8 region_to_set) >> } >> >> /* >> - * FM common sub-module will schedule this tasklet whenever it receives >> + * FM common sub-module will queue this work whenever it receives >> * FM packet from ST driver. >> */ >> -static void recv_tasklet(struct tasklet_struct *t) >> +static void recv_work(struct work_struct *t) >> { >> struct fmdev *fmdev; >> struct fm_irq *irq_info; >> @@ -256,7 +257,7 @@ static void recv_tasklet(struct tasklet_struct *t) >> u8 num_fm_hci_cmds; >> unsigned long flags; >> >> - fmdev = from_tasklet(fmdev, t, tx_task); >> + fmdev = from_work(fmdev, t, tx_task); >> irq_info = &fmdev->irq_info; >> /* Process all packets in the RX queue */ >> while ((skb = skb_dequeue(&fmdev->rx_q))) { >> @@ -322,22 +323,22 @@ static void recv_tasklet(struct tasklet_struct *t) >> >> /* >> * Check flow control field. If Num_FM_HCI_Commands field is >> - * not zero, schedule FM TX tasklet. >> + * not zero, queue FM TX work. >> */ >> if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt)) >> if (!skb_queue_empty(&fmdev->tx_q)) >> - tasklet_schedule(&fmdev->tx_task); >> + queue_work(system_bh_wq, &fmdev->tx_task); >> } >> } >> >> -/* FM send tasklet: is scheduled when FM packet has to be sent to chip */ >> -static void send_tasklet(struct tasklet_struct *t) >> +/* FM send work: is scheduled when FM packet has to be sent to chip */ >> +static void send_work(struct work_struct *t) >> { >> struct fmdev *fmdev; >> struct sk_buff *skb; >> int len; >> >> - fmdev = from_tasklet(fmdev, t, tx_task); >> + fmdev = from_work(fmdev, t, tx_task); >> >> if (!atomic_read(&fmdev->tx_cnt)) >> return; >> @@ -366,7 +367,7 @@ static void send_tasklet(struct tasklet_struct *t) >> if (len < 0) { >> kfree_skb(skb); >> fmdev->resp_comp = NULL; >> - fmerr("TX tasklet failed to send skb(%p)\n", skb); >> + fmerr("TX work failed to send skb(%p)\n", skb); >> atomic_set(&fmdev->tx_cnt, 1); >> } else { >> fmdev->last_tx_jiffies = jiffies; >> @@ -374,7 +375,7 @@ static void send_tasklet(struct tasklet_struct *t) >> } >> >> /* >> - * Queues FM Channel-8 packet to FM TX queue and schedules FM TX tasklet for >> + * Queues FM Channel-8 packet to FM TX queue and schedules FM TX work for >> * transmission >> */ >> static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, >> @@ -440,7 +441,7 @@ static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, >> >> fm_cb(skb)->completion = wait_completion; >> skb_queue_tail(&fmdev->tx_q, skb); >> - tasklet_schedule(&fmdev->tx_task); >> + queue_work(system_bh_wq, &fmdev->tx_task); >> >> return 0; >> } >> @@ -462,7 +463,7 @@ int fmc_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, >> >> if (!wait_for_completion_timeout(&fmdev->maintask_comp, >> FM_DRV_TX_TIMEOUT)) { >> - fmerr("Timeout(%d sec),didn't get regcompletion signal from RX tasklet\n", >> + fmerr("Timeout(%d sec),didn't get regcompletion signal from RX work\n", >> jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); >> return -ETIMEDOUT; >> } >> @@ -1455,7 +1456,7 @@ static long fm_st_receive(void *arg, struct sk_buff *skb) >> >> memcpy(skb_push(skb, 1), &skb->cb[0], 1); >> skb_queue_tail(&fmdev->rx_q, skb); >> - tasklet_schedule(&fmdev->rx_task); >> + queue_work(system_bh_wq, &fmdev->rx_task); >> >> return 0; >> } >> @@ -1537,13 +1538,13 @@ int fmc_prepare(struct fmdev *fmdev) >> spin_lock_init(&fmdev->rds_buff_lock); >> spin_lock_init(&fmdev->resp_skb_lock); >> >> - /* Initialize TX queue and TX tasklet */ >> + /* Initialize TX queue and TX work */ >> skb_queue_head_init(&fmdev->tx_q); >> - tasklet_setup(&fmdev->tx_task, send_tasklet); >> + INIT_WORK(&fmdev->tx_task, send_work); >> >> - /* Initialize RX Queue and RX tasklet */ >> + /* Initialize RX Queue and RX work */ >> skb_queue_head_init(&fmdev->rx_q); >> - tasklet_setup(&fmdev->rx_task, recv_tasklet); >> + INIT_WORK(&fmdev->rx_task, recv_work); >> >> fmdev->irq_info.stage = 0; >> atomic_set(&fmdev->tx_cnt, 1); >> @@ -1589,8 +1590,8 @@ int fmc_release(struct fmdev *fmdev) >> /* Service pending read */ >> wake_up_interruptible(&fmdev->rx.rds.read_queue); >> >> - tasklet_kill(&fmdev->tx_task); >> - tasklet_kill(&fmdev->rx_task); >> + cancel_work_sync(&fmdev->tx_task); >> + cancel_work_sync(&fmdev->rx_task); >> >> skb_queue_purge(&fmdev->tx_q); >> skb_queue_purge(&fmdev->rx_q); >> diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c >> index c76ba24c1f55..a2e2e58b7506 100644 >> --- a/drivers/media/rc/mceusb.c >> +++ b/drivers/media/rc/mceusb.c >> @@ -774,7 +774,7 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len, >> >> /* >> * Schedule work that can't be done in interrupt handlers >> - * (mceusb_dev_recv() and mce_write_callback()) nor tasklets. >> + * (mceusb_dev_recv() and mce_write_callback()) nor works. >> * Invokes mceusb_deferred_kevent() for recovering from >> * error events specified by the kevent bit field. >> */ >> diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c >> index 79faa2560613..c8bc84f4aefb 100644 >> --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c >> +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c >> @@ -19,6 +19,7 @@ >> #include <linux/input.h> >> >> #include <linux/mutex.h> >> +#include <linux/workqueue.h> >> >> #include <media/dmxdev.h> >> #include <media/dvb_demux.h> >> @@ -139,7 +140,7 @@ struct ttusb_dec { >> int v_pes_postbytes; >> >> struct list_head urb_frame_list; >> - struct tasklet_struct urb_tasklet; >> + struct work_struct urb_work; >> spinlock_t urb_frame_list_lock; >> >> struct dvb_demux_filter *audio_filter; >> @@ -766,9 +767,9 @@ static void ttusb_dec_process_urb_frame(struct ttusb_dec *dec, u8 *b, >> } >> } >> >> -static void ttusb_dec_process_urb_frame_list(struct tasklet_struct *t) >> +static void ttusb_dec_process_urb_frame_list(struct work_struct *t) >> { >> - struct ttusb_dec *dec = from_tasklet(dec, t, urb_tasklet); >> + struct ttusb_dec *dec = from_work(dec, t, urb_work); >> struct list_head *item; >> struct urb_frame *frame; >> unsigned long flags; >> @@ -822,7 +823,7 @@ static void ttusb_dec_process_urb(struct urb *urb) >> spin_unlock_irqrestore(&dec->urb_frame_list_lock, >> flags); >> >> - tasklet_schedule(&dec->urb_tasklet); >> + queue_work(system_bh_wq, &dec->urb_work); >> } >> } >> } else { >> @@ -1198,11 +1199,11 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec) >> return 0; >> } >> >> -static void ttusb_dec_init_tasklet(struct ttusb_dec *dec) >> +static void ttusb_dec_init_work(struct ttusb_dec *dec) >> { >> spin_lock_init(&dec->urb_frame_list_lock); >> INIT_LIST_HEAD(&dec->urb_frame_list); >> - tasklet_setup(&dec->urb_tasklet, ttusb_dec_process_urb_frame_list); >> + INIT_WORK(&dec->urb_work, ttusb_dec_process_urb_frame_list); >> } >> >> static int ttusb_init_rc( struct ttusb_dec *dec) >> @@ -1588,12 +1589,12 @@ static void ttusb_dec_exit_usb(struct ttusb_dec *dec) >> ttusb_dec_free_iso_urbs(dec); >> } >> >> -static void ttusb_dec_exit_tasklet(struct ttusb_dec *dec) >> +static void ttusb_dec_exit_work(struct ttusb_dec *dec) >> { >> struct list_head *item; >> struct urb_frame *frame; >> >> - tasklet_kill(&dec->urb_tasklet); >> + cancel_work_sync(&dec->urb_work); >> >> while ((item = dec->urb_frame_list.next) != &dec->urb_frame_list) { >> frame = list_entry(item, struct urb_frame, urb_frame_list); >> @@ -1703,7 +1704,7 @@ static int ttusb_dec_probe(struct usb_interface *intf, >> >> ttusb_dec_init_v_pes(dec); >> ttusb_dec_init_filters(dec); >> - ttusb_dec_init_tasklet(dec); >> + ttusb_dec_init_work(dec); >> >> dec->active = 1; >> >> @@ -1729,7 +1730,7 @@ static void ttusb_dec_disconnect(struct usb_interface *intf) >> dprintk("%s\n", __func__); >> >> if (dec->active) { >> - ttusb_dec_exit_tasklet(dec); >> + ttusb_dec_exit_work(dec); >> ttusb_dec_exit_filters(dec); >> if(enable_rc) >> ttusb_dec_exit_rc(dec); > > Regards, > > Hans Thank you very much for taking the time to review the patch. Will have it all Addressed in the next version. - Allen
