From bb31a8faa270beafcc51a65880c5564c6b718bd6 Mon Sep 17 00:00:00 2001
From: Albert Lee <albertcc@tw.ibm.com>
Date: Mon, 22 May 2006 11:43:46 +0800
Subject: [PATCH] [PATCH] libata: add pio flush for via atapi (was: Re: TR:
ASUS A8V Deluxe, x86_64)
Backport the "pio flush" from the libata major update to 2.6.17 for via atapi.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
drivers/scsi/libata-core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 823dfa78c0ba..fa476e7e0a48 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -3643,6 +3643,8 @@ static void ata_pio_block(struct ata_port *ap)
ata_pio_sector(qc);
}
+
+ ata_altstatus(ap); /* flush */
}
static void ata_pio_error(struct ata_port *ap)
@@ -3759,11 +3761,14 @@ static void atapi_packet_task(void *_data)
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags &= ~ATA_FLAG_NOINTR;
ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
+ ata_altstatus(ap); /* flush */
+
if (qc->tf.protocol == ATA_PROT_ATAPI_DMA)
ap->ops->bmdma_start(qc); /* initiate bmdma */
spin_unlock_irqrestore(&ap->host_set->lock, flags);
} else {
ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
+ ata_altstatus(ap); /* flush */
/* PIO commands are handled by polling */
ap->hsm_task_state = HSM_ST;
--
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