From: Ralph Metzler <rjkm@xxxxxxxxxxxxxx>
Implement shutdown workaround for some chipsets.
Signed-off-by: Ralph Metzler <rjkm@xxxxxxxxxxxxxx>
Signed-off-by: Oliver Endriss <o.endriss@xxxxxx>
---
drivers/media/dvb/ngene/ngene-cards.c | 1 +
drivers/media/dvb/ngene/ngene-core.c | 37 +++++++++++++++++++++++++++++++++
drivers/media/dvb/ngene/ngene.h | 1 +
3 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/drivers/media/dvb/ngene/ngene-cards.c b/drivers/media/dvb/ngene/ngene-cards.c
index 93e6f9e..6d87427 100644
--- a/drivers/media/dvb/ngene/ngene-cards.c
+++ b/drivers/media/dvb/ngene/ngene-cards.c
@@ -436,6 +436,7 @@ static struct pci_driver ngene_pci_driver = {
.probe = ngene_probe,
.remove = __devexit_p(ngene_remove),
.err_handler = &ngene_errors,
+ .shutdown = ngene_shutdown,
};
static __init int module_init_ngene(void)
diff --git a/drivers/media/dvb/ngene/ngene-core.c b/drivers/media/dvb/ngene/ngene-core.c
index 3948e1c..672f7fe 100644
--- a/drivers/media/dvb/ngene/ngene-core.c
+++ b/drivers/media/dvb/ngene/ngene-core.c
@@ -45,6 +45,10 @@ static int one_adapter = 1;
module_param(one_adapter, int, 0444);
MODULE_PARM_DESC(one_adapter, "Use only one adapter.");
+static int shutdown_workaround;
+module_param(shutdown_workaround, int, 0644);
+MODULE_PARM_DESC(one_adapter, "Activate workaround for shutdown problem with some chipsets.");
+
static int debug;
module_param(debug, int, 0444);
MODULE_PARM_DESC(debug, "Print debugging information.");
@@ -1573,6 +1577,39 @@ static void cxd_detach(struct ngene *dev)
ci->en = 0;
}
+/***********************************/
+/* workaround for shutdown failure */
+/***********************************/
+
+static void ngene_unlink(struct ngene *dev)
+{
+ struct ngene_command com;
+
+ com.cmd.hdr.Opcode = CMD_MEM_WRITE;
+ com.cmd.hdr.Length = 3;
+ com.cmd.MemoryWrite.address = 0x910c;
+ com.cmd.MemoryWrite.data = 0xff;
+ com.in_len = 3;
+ com.out_len = 1;
+
+ down(&dev->cmd_mutex);
+ ngwritel(0, NGENE_INT_ENABLE);
+ ngene_command_mutex(dev, &com);
+ up(&dev->cmd_mutex);
+}
+
+void ngene_shutdown(struct pci_dev *pdev)
+{
+ struct ngene *dev = (struct ngene *)pci_get_drvdata(pdev);
+
+ if (!dev || !shutdown_workaround)
+ return;
+
+ printk(KERN_INFO DEVICE_NAME ": shutdown workaround...\n");
+ ngene_unlink(dev);
+ pci_disable_device(pdev);
+}
+
/****************************************************************************/
/* device probe/remove calls ************************************************/
/****************************************************************************/
diff --git a/drivers/media/dvb/ngene/ngene.h b/drivers/media/dvb/ngene/ngene.h
index f783406..c1bb810 100644
--- a/drivers/media/dvb/ngene/ngene.h
+++ b/drivers/media/dvb/ngene/ngene.h
@@ -881,6 +881,7 @@ struct ngene_buffer {
int __devinit ngene_probe(struct pci_dev *pci_dev,
const struct pci_device_id *id);
void __devexit ngene_remove(struct pci_dev *pdev);
+void ngene_shutdown(struct pci_dev *pdev);
int ngene_command(struct ngene *dev, struct ngene_command *com);
int ngene_command_gpio_set(struct ngene *dev, u8 select, u8 level);
void set_transfer(struct ngene_channel *chan, int state);
--
1.6.5.3
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