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authorTejun Heo <htejun@gmail.com>2008-03-25 04:22:47 +0100
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 21:44:16 +0200
commit358f9a77a668660729e705fde9c3cf69f013aa98 (patch)
treea249660fdd9f252925eff9eaac3ed7836c839f91 /drivers/ata/sata_mv.c
parentlibata: reorganize ata_port_operations (diff)
downloadlinux-358f9a77a668660729e705fde9c3cf69f013aa98.tar.xz
linux-358f9a77a668660729e705fde9c3cf69f013aa98.zip
libata: implement and use ata_noop_irq_clear()
->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@gmail.com>
Diffstat (limited to 'drivers/ata/sata_mv.c')
-rw-r--r--drivers/ata/sata_mv.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index a4944c8ad46d..b3b3da4eaa03 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)