diff options
| author | Tejun Heo <htejun@gmail.com> | 2008-03-25 06:22:47 +0300 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 23:44:16 +0400 |
| commit | 358f9a77a668660729e705fde9c3cf69f013aa98 (patch) | |
| tree | a249660fdd9f252925eff9eaac3ed7836c839f91 /drivers/ata/sata_mv.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_mv.c')
| -rw-r--r-- | drivers/ata/sata_mv.c | 11 |
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) |