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>

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 884f52f43f8f38b31d63ca2a23750c514f0427c7..c228df298bd898ae6e1379d31dc6d6c9dc41eb1a 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -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

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 3e95e5c402d4c6dd815ce87653e088e99ad6cf75..703febb2df31e248243e7017b6a34828ec23128a 100644 (file)
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -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,