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| author | Tejun Heo <htejun@gmail.com> | 2008-03-25 03:22:47 (GMT) |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 19:44:16 (GMT) |
| commit | 358f9a77a668660729e705fde9c3cf69f013aa98 (patch) | |
| tree | a249660fdd9f252925eff9eaac3ed7836c839f91 /drivers/ata/sata_qstor.c | |
| parent | c1bc899f5805771926c9198e2ab4d77122c356a1 (diff) | |
| download | linux-358f9a77a668660729e705fde9c3cf69f013aa98.tar.xz | |
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_qstor.c')
| -rw-r--r-- | drivers/ata/sata_qstor.c | 8 |
1 files changed, 1 insertions, 7 deletions
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); |