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[PATCH] libata: minor patch for ATA_DFLAG_PIO

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Problem:
 - With 2.6.17 libata, some PIO-only devices are given DMA commands.

Changes:
 - Do not clear the ATA_DFLAG_PIO flag in ata_dev_configure().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
This commit is contained in:
Tejun Heo
2006-06-23 12:49:52 +08:00
committed by Chris Wright
parent 4f75bf81d4
commit f92b235f72
2 changed files with 7 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/scsi/libata-core.c
+1 -1
View File
@@ -1229,7 +1229,7 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev,
id[84], id[85], id[86], id[87], id[88]);
/* initialize to-be-configured parameters */
dev->flags = 0;
dev->flags &= ~ATA_DFLAG_CFG_MASK;
dev->max_sectors = 0;
dev->cdb_len = 0;
dev->n_sectors = 0;
include/linux/libata.h
+6 -3
View File
@@ -120,9 +120,12 @@ enum {
ATA_SHT_USE_CLUSTERING = 1,
/* struct ata_device stuff */
ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */
ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */
ATA_DFLAG_LBA = (1 << 2), /* device supports LBA */
ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
ATA_DFLAG_CFG_MASK = (1 << 8) - 1,
ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */