libata: add another IRQ calls (libata drivers)

This patch is against each libata driver.

Two IRQ calls are added in ata_port_operations.
- irq_on() is used to enable interrupts.
- irq_ack() is used to acknowledge a device interrupt.

In most drivers, ata_irq_on() and ata_irq_ack() are used for
irq_on and irq_ack respectively.

In some drivers (ex: ahci, sata_sil24) which cannot use them
as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 9dcf11e2c7b3..e65e8d55da3e 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -400,6 +400,8 @@ static const struct ata_port_operations sil24_ops = {
 
         .irq_handler            = sil24_interrupt,
         .irq_clear              = sil24_irq_clear,
+        .irq_on                 = ata_dummy_irq_on,
+        .irq_ack                = ata_dummy_irq_ack,
 
         .scr_read               = sil24_scr_read,
         .scr_write              = sil24_scr_write,