->irq_clear() is used to clear IRQ bit of a SFF controller and isn't
useful for drivers which don't use libata SFF HSM implementation.
However, it's a required callback and many drivers implement their own
noop version as placeholder. This patch implements ata_noop_irq_clear
and use it to replace those custom placeholders.
Also, SFF drivers which don't support BMDMA don't need to use
ata_bmdma_irq_clear(). It becomes noop if BMDMA address isn't
initialized. Convert them to use ata_noop_irq_clear().
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/ata/ahci.c | 12 +++---------
drivers/ata/libata-core.c | 1 +
drivers/ata/libata-sff.c | 8 ++++++++
drivers/ata/pata_ali.c | 2 +-
drivers/ata/pata_at32.c | 7 +------
drivers/ata/pata_icside.c | 7 +------
drivers/ata/pata_isapnp.c | 2 +-
drivers/ata/pata_ixp4xx_cf.c | 2 +-
drivers/ata/pata_legacy.c | 22 +++++++++++-----------
drivers/ata/pata_mpc52xx.c | 2 +-
drivers/ata/pata_mpiix.c | 2 +-
drivers/ata/pata_ns87410.c | 2 +-
drivers/ata/pata_pcmcia.c | 4 ++--
drivers/ata/pata_platform.c | 2 +-
drivers/ata/pata_qdi.c | 4 ++--
drivers/ata/pata_winbond.c | 2 +-
drivers/ata/pdc_adma.c | 8 +-------
drivers/ata/sata_fsl.c | 7 +------
drivers/ata/sata_inic162x.c | 7 +------
drivers/ata/sata_mv.c | 11 +++--------
drivers/ata/sata_qstor.c | 8 +-------
drivers/ata/sata_sil24.c | 8 +-------
include/linux/libata.h | 1 +
23 files changed, 46 insertions(+), 85 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 44946bd..415cc77 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -238,7 +238,6 @@ static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
-static void ahci_irq_clear(struct ata_port *ap);
static int ahci_port_start(struct ata_port *ap);
static void ahci_port_stop(struct ata_port *ap);
static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
@@ -298,7 +297,7 @@ static const struct ata_port_operations ahci_ops = {
.qc_prep = ahci_qc_prep,
.qc_issue = ahci_qc_issue,
- .irq_clear = ahci_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.scr_read = ahci_scr_read,
.scr_write = ahci_scr_write,
@@ -334,7 +333,7 @@ static const struct ata_port_operations ahci_vt8251_ops = {
.qc_prep = ahci_qc_prep,
.qc_issue = ahci_qc_issue,
- .irq_clear = ahci_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.scr_read = ahci_scr_read,
.scr_write = ahci_scr_write,
@@ -368,7 +367,7 @@ static const struct ata_port_operations ahci_p5wdh_ops = {
.qc_prep = ahci_qc_prep,
.qc_issue = ahci_qc_issue,
- .irq_clear = ahci_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.scr_read = ahci_scr_read,
.scr_write = ahci_scr_write,
@@ -1710,11 +1709,6 @@ static void ahci_port_intr(struct ata_port *ap)
}
}
-static void ahci_irq_clear(struct ata_port *ap)
-{
- /* TODO */
-}
-
static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
{
struct ata_host *host = dev_instance;
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 410f1ea..2772657 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -7556,6 +7556,7 @@ EXPORT_SYMBOL_GPL(ata_noop_qc_prep);
EXPORT_SYMBOL_GPL(ata_bmdma_setup);
EXPORT_SYMBOL_GPL(ata_bmdma_start);
EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear);
+EXPORT_SYMBOL_GPL(ata_noop_irq_clear);
EXPORT_SYMBOL_GPL(ata_bmdma_status);
EXPORT_SYMBOL_GPL(ata_bmdma_stop);
EXPORT_SYMBOL_GPL(ata_bmdma_freeze);
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 60cd4b1..34cdab0 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -297,6 +297,14 @@ void ata_bmdma_irq_clear(struct ata_port *ap)
}
/**
+ * ata_noop_irq_clear - Noop placeholder for irq_clear
+ * @ap: Port associated with this ATA transaction.
+ */
+void ata_noop_irq_clear(struct ata_port *ap)
+{
+}
+
+/**
* ata_bmdma_status - Read PCI IDE BMDMA status
* @ap: Port associated with this ATA transaction.
*
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 5ef6594..8a9044c 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -342,7 +342,7 @@ static struct ata_port_operations ali_early_port_ops = {
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_at32.c b/drivers/ata/pata_at32.c
index db057b1..27c959f 100644
--- a/drivers/ata/pata_at32.c
+++ b/drivers/ata/pata_at32.c
@@ -166,11 +166,6 @@ static void pata_at32_set_piomode(struct ata_port *ap, struct ata_device *adev)
}
}
-static void pata_at32_irq_clear(struct ata_port *ap)
-{
- /* No DMA controller yet */
-}
-
static struct scsi_host_template at32_sht = {
.module = THIS_MODULE,
.name = DRV_NAME,
@@ -208,7 +203,7 @@ static struct ata_port_operations at32_port_ops = {
.data_xfer = ata_data_xfer,
- .irq_clear = pata_at32_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c
index 5b8586d..121fe52 100644
--- a/drivers/ata/pata_icside.c
+++ b/drivers/ata/pata_icside.c
@@ -328,11 +328,6 @@ static struct scsi_host_template pata_icside_sht = {
.bios_param = ata_std_bios_param,
};
-/* wish this was exported from libata-core */
-static void ata_dummy_noret(struct ata_port *port)
-{
-}
-
static void pata_icside_postreset(struct ata_link *link, unsigned int *classes)
{
struct ata_port *ap = link->ap;
@@ -386,7 +381,7 @@ static struct ata_port_operations pata_icside_port_ops = {
.error_handler = pata_icside_error_handler,
.post_internal_cmd = pata_icside_bmdma_stop,
- .irq_clear = ata_dummy_noret,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = pata_icside_port_start,
diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c
index 4320e79..ef561de 100644
--- a/drivers/ata/pata_isapnp.c
+++ b/drivers/ata/pata_isapnp.c
@@ -55,7 +55,7 @@ static struct ata_port_operations isapnp_port_ops = {
.data_xfer = ata_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index 030878f..83e38cc 100644
--- a/drivers/ata/pata_ixp4xx_cf.c
+++ b/drivers/ata/pata_ixp4xx_cf.c
@@ -126,7 +126,7 @@ static struct ata_port_operations ixp4xx_port_ops = {
.cable_detect = ata_cable_40wire,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_port_start,
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 333dc15..7b2140e 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -252,7 +252,7 @@ static struct ata_port_operations simple_port_ops = {
.data_xfer = ata_data_xfer_noirq,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -279,7 +279,7 @@ static struct ata_port_operations legacy_port_ops = {
.data_xfer = ata_data_xfer_noirq,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -393,7 +393,7 @@ static struct ata_port_operations pdc20230_port_ops = {
.data_xfer = pdc_data_xfer_vlb,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -447,7 +447,7 @@ static struct ata_port_operations ht6560a_port_ops = {
.data_xfer = ata_data_xfer, /* Check vlb/noirq */
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -512,7 +512,7 @@ static struct ata_port_operations ht6560b_port_ops = {
.data_xfer = ata_data_xfer, /* FIXME: Check 32bit and noirq */
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -633,7 +633,7 @@ static struct ata_port_operations opti82c611a_port_ops = {
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -765,7 +765,7 @@ static struct ata_port_operations opti82c46x_port_ops = {
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -950,7 +950,7 @@ static struct ata_port_operations qdi6500_port_ops = {
.data_xfer = vlb32_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -977,7 +977,7 @@ static struct ata_port_operations qdi6580_port_ops = {
.data_xfer = vlb32_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -1004,7 +1004,7 @@ static struct ata_port_operations qdi6580dp_port_ops = {
.data_xfer = vlb32_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -1095,7 +1095,7 @@ static struct ata_port_operations winbond_port_ops = {
.data_xfer = vlb32_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c
index 5413ebf..d84e0c8 100644
--- a/drivers/ata/pata_mpc52xx.c
+++ b/drivers/ata/pata_mpc52xx.c
@@ -296,7 +296,7 @@ static struct ata_port_operations mpc52xx_ata_port_ops = {
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_port_start,
};
diff --git a/drivers/ata/pata_mpiix.c b/drivers/ata/pata_mpiix.c
index c0d9e0c..ced6372 100644
--- a/drivers/ata/pata_mpiix.c
+++ b/drivers/ata/pata_mpiix.c
@@ -187,7 +187,7 @@ static struct ata_port_operations mpiix_port_ops = {
.qc_issue = mpiix_qc_issue_prot,
.data_xfer = ata_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_ns87410.c b/drivers/ata/pata_ns87410.c
index 9fe66fd..d182bdf 100644
--- a/drivers/ata/pata_ns87410.c
+++ b/drivers/ata/pata_ns87410.c
@@ -182,7 +182,7 @@ static struct ata_port_operations ns87410_port_ops = {
.data_xfer = ata_data_xfer,
.irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c
index 3e7f6a9..9881a9e 100644
--- a/drivers/ata/pata_pcmcia.c
+++ b/drivers/ata/pata_pcmcia.c
@@ -164,7 +164,7 @@ static struct ata_port_operations pcmcia_port_ops = {
.data_xfer = ata_data_xfer_noirq,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -189,7 +189,7 @@ static struct ata_port_operations pcmcia_8bit_port_ops = {
.data_xfer = ata_data_xfer_8bit,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index aad7adc..a8429f5 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -86,7 +86,7 @@ static struct ata_port_operations pata_platform_port_ops = {
.data_xfer = ata_data_xfer_noirq,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_dummy_ret0,
diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c
index 9f308ed..60238d5 100644
--- a/drivers/ata/pata_qdi.c
+++ b/drivers/ata/pata_qdi.c
@@ -191,7 +191,7 @@ static struct ata_port_operations qdi6500_port_ops = {
.data_xfer = qdi_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
@@ -217,7 +217,7 @@ static struct ata_port_operations qdi6580_port_ops = {
.data_xfer = qdi_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c
index 99c92ed..5318248 100644
--- a/drivers/ata/pata_winbond.c
+++ b/drivers/ata/pata_winbond.c
@@ -159,7 +159,7 @@ static struct ata_port_operations winbond_port_ops = {
.data_xfer = winbond_data_xfer,
- .irq_clear = ata_bmdma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c
index 8e1b7e9..bc2d12a 100644
--- a/drivers/ata/pdc_adma.c
+++ b/drivers/ata/pdc_adma.c
@@ -138,7 +138,6 @@ static unsigned int adma_qc_issue(struct ata_queued_cmd *qc);
static int adma_check_atapi_dma(struct ata_queued_cmd *qc);
static void adma_bmdma_stop(struct ata_queued_cmd *qc);
static u8 adma_bmdma_status(struct ata_port *ap);
-static void adma_irq_clear(struct ata_port *ap);
static void adma_freeze(struct ata_port *ap);
static void adma_thaw(struct ata_port *ap);
static void adma_error_handler(struct ata_port *ap);
@@ -174,7 +173,7 @@ static const struct ata_port_operations adma_ata_ops = {
.freeze = adma_freeze,
.thaw = adma_thaw,
.error_handler = adma_error_handler,
- .irq_clear = adma_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.port_start = adma_port_start,
.port_stop = adma_port_stop,
@@ -223,11 +222,6 @@ static u8 adma_bmdma_status(struct ata_port *ap)
return 0;
}
-static void adma_irq_clear(struct ata_port *ap)
-{
- /* nothing */
-}
-
static void adma_reset_engine(struct ata_port *ap)
{
void __iomem *chan = ADMA_PORT_REGS(ap);
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 47a9084..686a9b8 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -944,11 +944,6 @@ static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc)
}
}
-static void sata_fsl_irq_clear(struct ata_port *ap)
-{
- /* unused */
-}
-
static void sata_fsl_error_intr(struct ata_port *ap)
{
struct ata_link *link = &ap->link;
@@ -1234,7 +1229,7 @@ static const struct ata_port_operations sata_fsl_ops = {
.qc_prep = sata_fsl_qc_prep,
.qc_issue = sata_fsl_qc_issue,
- .irq_clear = sata_fsl_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.scr_read = sata_fsl_scr_read,
.scr_write = sata_fsl_scr_write,
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 59e65ed..74f1436 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -266,11 +266,6 @@ static u8 inic_bmdma_status(struct ata_port *ap)
return ATA_DMA_INTR;
}
-static void inic_irq_clear(struct ata_port *ap)
-{
- /* noop */
-}
-
static void inic_host_intr(struct ata_port *ap)
{
void __iomem *port_base = inic_port_base(ap);
@@ -555,7 +550,7 @@ static struct ata_port_operations inic_port_ops = {
.bmdma_stop = inic_bmdma_stop,
.bmdma_status = inic_bmdma_status,
- .irq_clear = inic_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.qc_prep = ata_qc_prep,
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 3cd7400..a73c7af 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -461,7 +461,6 @@ struct mv_hw_ops {
void (*reset_bus)(struct ata_host *host, void __iomem *mmio);
};
-static void mv_irq_clear(struct ata_port *ap);
static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
@@ -564,7 +563,7 @@ static const struct ata_port_operations mv5_ops = {
.qc_issue = mv_qc_issue,
.data_xfer = ata_data_xfer,
- .irq_clear = mv_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.error_handler = mv_error_handler,
@@ -592,7 +591,7 @@ static const struct ata_port_operations mv6_ops = {
.qc_issue = mv_qc_issue,
.data_xfer = ata_data_xfer,
- .irq_clear = mv_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.error_handler = mv_error_handler,
@@ -620,7 +619,7 @@ static const struct ata_port_operations mv_iie_ops = {
.qc_issue = mv_qc_issue,
.data_xfer = ata_data_xfer,
- .irq_clear = mv_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.error_handler = mv_error_handler,
@@ -801,10 +800,6 @@ static inline int mv_get_hc_count(unsigned long port_flags)
return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
}
-static void mv_irq_clear(struct ata_port *ap)
-{
-}
-
static void mv_set_edma_ptrs(void __iomem *port_mmio,
struct mv_host_priv *hpriv,
struct mv_port_priv *pp)
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c
index 91cc12c..3c8e97f 100644
--- a/drivers/ata/sata_qstor.c
+++ b/drivers/ata/sata_qstor.c
@@ -121,7 +121,6 @@ static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
static void qs_bmdma_stop(struct ata_queued_cmd *qc);
static u8 qs_bmdma_status(struct ata_port *ap);
-static void qs_irq_clear(struct ata_port *ap);
static void qs_freeze(struct ata_port *ap);
static void qs_thaw(struct ata_port *ap);
static void qs_error_handler(struct ata_port *ap);
@@ -157,7 +156,7 @@ static const struct ata_port_operations qs_ata_ops = {
.freeze = qs_freeze,
.thaw = qs_thaw,
.error_handler = qs_error_handler,
- .irq_clear = qs_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.irq_on = ata_irq_on,
.scr_read = qs_scr_read,
.scr_write = qs_scr_write,
@@ -211,11 +210,6 @@ static u8 qs_bmdma_status(struct ata_port *ap)
return 0;
}
-static void qs_irq_clear(struct ata_port *ap)
-{
- /* nothing */
-}
-
static inline void qs_enter_reg_mode(struct ata_port *ap)
{
u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 64cdde5..5e57f78 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -348,7 +348,6 @@ static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
static int sil24_qc_defer(struct ata_queued_cmd *qc);
static void sil24_qc_prep(struct ata_queued_cmd *qc);
static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc);
-static void sil24_irq_clear(struct ata_port *ap);
static void sil24_pmp_attach(struct ata_port *ap);
static void sil24_pmp_detach(struct ata_port *ap);
static void sil24_freeze(struct ata_port *ap);
@@ -416,7 +415,7 @@ static const struct ata_port_operations sil24_ops = {
.qc_prep = sil24_qc_prep,
.qc_issue = sil24_qc_issue,
- .irq_clear = sil24_irq_clear,
+ .irq_clear = ata_noop_irq_clear,
.scr_read = sil24_scr_read,
.scr_write = sil24_scr_write,
@@ -921,11 +920,6 @@ static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc)
return 0;
}
-static void sil24_irq_clear(struct ata_port *ap)
-{
- /* unused */
-}
-
static void sil24_pmp_attach(struct ata_port *ap)
{
sil24_config_pmp(ap, 1);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 7e012d9..db6f2b9 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -902,6 +902,7 @@ extern void ata_bmdma_start(struct ata_queued_cmd *qc);
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
extern u8 ata_bmdma_status(struct ata_port *ap);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
+extern void ata_noop_irq_clear(struct ata_port *ap);
extern void ata_bmdma_freeze(struct ata_port *ap);
extern void ata_bmdma_thaw(struct ata_port *ap);
extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
--
1.5.2.4
-
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