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, 4 insertions, 0 deletions

diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index e8a6e7d73b72..73394c75be42 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -678,6 +678,8 @@ static struct ata_port_operations it821x_smart_port_ops = {
 
         .irq_handler    = ata_interrupt,
         .irq_clear      = ata_bmdma_irq_clear,
+        .irq_on         = ata_irq_on,
+        .irq_ack        = ata_irq_ack,
 
         .port_start     = it821x_port_start,
 };
@@ -712,6 +714,8 @@ static struct ata_port_operations it821x_passthru_port_ops = {
 
         .irq_clear      = ata_bmdma_irq_clear,
         .irq_handler    = ata_interrupt,
+        .irq_on         = ata_irq_on,
+        .irq_ack        = ata_irq_ack,
 
         .port_start     = it821x_port_start,
 };