[PATCH] libata: let ATA_FLAG_PIO_POLLING use polling pio for ATA_PROT_NODATA

Even if ATA_FLAG_PIO_POLLING is set, libata uses irq pio for the ATA_PROT_NODATA protocol.
This patch let ATA_FLAG_PIO_POLLING use polling pio for the ATA_PROT_NODATA protocol.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 8816e30fb7a4..d2e686371870 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4960,6 +4960,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
         if (ap->flags & ATA_FLAG_PIO_POLLING) {
                 switch (qc->tf.protocol) {
                 case ATA_PROT_PIO:
+                case ATA_PROT_NODATA:
                 case ATA_PROT_ATAPI:
                 case ATA_PROT_ATAPI_NODATA:
                         qc->tf.flags |= ATA_TFLAG_POLLING;