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authorJohannes Thumshirn <jthumshirn@suse.de>2018-06-25 14:20:59 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-06-26 19:27:07 +0300
commit6bec4c3842cd7338973839683bbf96273c3b85f7 (patch)
treeba97de671cbfeb8c47d7eb3338a2b2be34cec94f /drivers/scsi/mesh.c
parentc65be1a63f1df224c8f22d72b9ec824241ada585 (diff)
downloadlinux-6bec4c3842cd7338973839683bbf96273c3b85f7.tar.xz
scsi: don't add scsi command result bytes
Some drivers are ADDing the scsi command's result bytes instead of ORing them. While this can produce correct results it has unexpected side effects. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mesh.c')
-rw-r--r--drivers/scsi/mesh.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
index 1753e42826dd..82e01dbe90af 100644
--- a/drivers/scsi/mesh.c
+++ b/drivers/scsi/mesh.c
@@ -594,9 +594,9 @@ static void mesh_done(struct mesh_state *ms, int start_next)
ms->current_req = NULL;
tp->current_req = NULL;
if (cmd) {
- cmd->result = (ms->stat << 16) + cmd->SCp.Status;
+ cmd->result = (ms->stat << 16) | cmd->SCp.Status;
if (ms->stat == DID_OK)
- cmd->result += (cmd->SCp.Message << 8);
+ cmd->result |= cmd->SCp.Message << 8;
if (DEBUG_TARGET(cmd)) {
printk(KERN_DEBUG "mesh_done: result = %x, data_ptr=%d, buflen=%d\n",
cmd->result, ms->data_ptr, scsi_bufflen(cmd));