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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 /include/linux/libata.h
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 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 9476a479691b..639298af583e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -896,6 +896,7 @@ 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,