From: Jeff Garzik <jeff@garzik.org>
Date: Fri, 25 May 2007 08:39:39 +0000 (-0400)
Subject: [libata] Fix decoding of 6-byte commands
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6c7b7d2b7615110edbc4ea7816831c13b0250ebb;p=openwrt%2Fstaging%2Fblogic.git

[libata] Fix decoding of 6-byte commands

The code for parsing 6-byte SCSI command LBAs
missed the top 5 bits (the MSB).

Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 242c43eef807..b3900cfbd880 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1050,14 +1050,15 @@ static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
 static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
 {
 	u64 lba = 0;
-	u32 len = 0;
+	u32 len;
 
 	VPRINTK("six-byte command\n");
 
+	lba |= ((u64)(cdb[1] & 0x1f)) << 16;
 	lba |= ((u64)cdb[2]) << 8;
 	lba |= ((u64)cdb[3]);
 
-	len |= ((u32)cdb[4]);
+	len = cdb[4];
 
 	*plba = lba;
 	*plen = len;