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libata passthru: update cached device paramters 

INIT_DEV_PARAMS and SET_MULTI_MODE change the device parameters cached
by libata.  Re-read IDENTIFY DEVICE info and update the cached device
paramters when seeing these commands.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Albert Lee 2007-06-07 16:01:17 +08:00 committed by Jeff Garzik
parent fa4453c4c9
commit 2c3d2a46f1
2 changed files with 17 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/ata/libata-scsi.c
View File

@ -1363,12 +1363,22 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
* schedule EH_REVALIDATE operation to update the IDENTIFY DEVICE
* cache
*/
if (ap->ops->error_handler &&
!need_sense && (qc->tf.command == ATA_CMD_SET_FEATURES) &&
((qc->tf.feature == SETFEATURES_WC_ON) ||
(qc->tf.feature == SETFEATURES_WC_OFF))) {
ap->eh_info.action |= ATA_EH_REVALIDATE;
ata_port_schedule_eh(ap);
if (ap->ops->error_handler && !need_sense) {
switch (qc->tf.command) {
case ATA_CMD_SET_FEATURES:
if ((qc->tf.feature == SETFEATURES_WC_ON) ||
(qc->tf.feature == SETFEATURES_WC_OFF)) {
ap->eh_info.action |= ATA_EH_REVALIDATE;
ata_port_schedule_eh(ap);
}
break;
case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */
case ATA_CMD_SET_MULTI: /* multi_count changed */
ap->eh_info.action |= ATA_EH_REVALIDATE;
ata_port_schedule_eh(ap);
break;
}
}
/* For ATA pass thru (SAT) commands, generate a sense block if

1
include/linux/ata.h
View File

@ -151,6 +151,7 @@ enum {
ATA_CMD_WRITE_MULTI_EXT = 0x39,
ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
ATA_CMD_SET_FEATURES = 0xEF,
ATA_CMD_SET_MULTI = 0xC6,
ATA_CMD_PACKET = 0xA0,
ATA_CMD_VERIFY = 0x40,
ATA_CMD_VERIFY_EXT = 0x42,