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| author | Tejun Heo <htejun@gmail.com> | 2008-03-25 04:22:47 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 21:44:16 +0200 |
| commit | 358f9a77a668660729e705fde9c3cf69f013aa98 (patch) | |
| tree | a249660fdd9f252925eff9eaac3ed7836c839f91 /drivers/ata/ahci.c | |
| parent | libata: reorganize ata_port_operations (diff) | |
| download | linux-358f9a77a668660729e705fde9c3cf69f013aa98.tar.xz 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/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 1bd258e5390f..492e521715d6 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -244,7 +244,6 @@ static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc); -static void ahci_irq_clear(struct ata_port *ap); static int ahci_port_start(struct ata_port *ap); static void ahci_port_stop(struct ata_port *ap); static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf); @@ -307,7 +306,7 @@ static const struct ata_port_operations ahci_ops = { .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, - .irq_clear = ahci_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = ahci_scr_read, .scr_write = ahci_scr_write, @@ -343,7 +342,7 @@ static const struct ata_port_operations ahci_vt8251_ops = { .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, - .irq_clear = ahci_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = ahci_scr_read, .scr_write = ahci_scr_write, @@ -377,7 +376,7 @@ static const struct ata_port_operations ahci_p5wdh_ops = { .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, - .irq_clear = ahci_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = ahci_scr_read, .scr_write = ahci_scr_write, @@ -1769,11 +1768,6 @@ static void ahci_port_intr(struct ata_port *ap) } } -static void ahci_irq_clear(struct ata_port *ap) -{ - /* TODO */ -} - static irqreturn_t ahci_interrupt(int irq, void *dev_instance) { struct ata_host *host = dev_instance; |