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| author | Tejun Heo <htejun@gmail.com> | 2008-03-25 12:22:47 +0900 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 15:44:16 -0400 |
| commit | 358f9a77a668660729e705fde9c3cf69f013aa98 (patch) | |
| tree | a249660fdd9f252925eff9eaac3ed7836c839f91 /drivers/ata/pdc_adma.c | |
| parent | c1bc899f5805771926c9198e2ab4d77122c356a1 (diff) | |
| download | linux-358f9a77a668660729e705fde9c3cf69f013aa98.tar.gz linux-358f9a77a668660729e705fde9c3cf69f013aa98.tar.bz2 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/pdc_adma.c')
| -rw-r--r-- | drivers/ata/pdc_adma.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c index 8e1b7e9c0ae4..bc2d12a2da30 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); |