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authorTejun Heo <htejun@gmail.com>2008-03-25 12:22:47 +0900
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 15:44:16 -0400
commit358f9a77a668660729e705fde9c3cf69f013aa98 (patch)
treea249660fdd9f252925eff9eaac3ed7836c839f91 /drivers/ata/pata_at32.c
parentc1bc899f5805771926c9198e2ab4d77122c356a1 (diff)
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/pata_at32.c')
-rw-r--r--drivers/ata/pata_at32.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/ata/pata_at32.c b/drivers/ata/pata_at32.c
index db057b183d60..27c959f35c2c 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,