From: Albert Lee <albertcc@tw.ibm.com>
Date: Thu, 7 Jun 2007 08:01:17 +0000 (+0800)
Subject: libata passthru: update cached device paramters
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2c3d2a46f1ccf591850b20f4fdde12bcf2bf3dfd;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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 884f52f43f8..c228df298bd 100644
--- 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 3e95e5c402d..703febb2df3 100644
--- 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,