[PATCH] libata: interrupt driven pio for LLD

libata.h:
libata-core:
  Add ATA_FLAG_PIO_POLLING flag for LLDs that expect interrupt for
command completion only.

sata_nv.c:
sata_vsc.c:
  irq handler is wrapper around ata_host_intr(), can handle PIO interrupts.

sata_promise.c:
sata_sx4.c:
sata_qstor.c:
sata_mv.c:
  Private irq handler.
  Polling mode ATA_FLAG_PIO_POLLING used for compatibility.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index ea76fe44585e..b8f1f6963179 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -241,7 +241,8 @@ static struct ata_port_info mv_port_info[] = {
         {  /* chip_504x */
                 .sht            = &mv_sht,
                 .host_flags     = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-                                   ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO),
+                                   ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
+                                   ATA_FLAG_PIO_POLLING),
                 .pio_mask       = 0x1f, /* pio4-0 */
                 .udma_mask      = 0,    /* 0x7f (udma6-0 disabled for now) */
                 .port_ops       = &mv_ops,
@@ -250,7 +251,7 @@ static struct ata_port_info mv_port_info[] = {
                 .sht            = &mv_sht,
                 .host_flags     = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
                                    ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO | 
-                                   MV_FLAG_DUAL_HC),
+                                   ATA_FLAG_PIO_POLLING | MV_FLAG_DUAL_HC),
                 .pio_mask       = 0x1f, /* pio4-0 */
                 .udma_mask      = 0,    /* 0x7f (udma6-0 disabled for now) */
                 .port_ops       = &mv_ops,
@@ -259,6 +260,7 @@ static struct ata_port_info mv_port_info[] = {
                 .sht            = &mv_sht,
                 .host_flags     = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
                                    ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO | 
+                                   ATA_FLAG_PIO_POLLING |
                                    MV_FLAG_IRQ_COALESCE | MV_FLAG_BDMA),
                 .pio_mask       = 0x1f, /* pio4-0 */
                 .udma_mask      = 0,    /* 0x7f (udma6-0 disabled for now) */
@@ -268,6 +270,7 @@ static struct ata_port_info mv_port_info[] = {
                 .sht            = &mv_sht,
                 .host_flags     = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
                                    ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
+                                   ATA_FLAG_PIO_POLLING |
                                    MV_FLAG_IRQ_COALESCE | MV_FLAG_DUAL_HC |
                                    MV_FLAG_BDMA),
                 .pio_mask       = 0x1f, /* pio4-0 */