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[Qemu-devel] [PATCH 077/108] scsi-disk: fix bug in scsi_block_new_reques

From: Michael Roth
Subject: [Qemu-devel] [PATCH 077/108] scsi-disk: fix bug in scsi_block_new_request() introduced by commit 137745c
Date: Wed, 6 Aug 2014 15:39:27 -0500

From: Ulrich Obergfell <address@hidden>

This patch fixes a bug in scsi_block_new_request() that was introduced
by commit 137745c5c60f083ec982fe9e861e8c16ebca1ba8. If the host cache
is used - i.e. if BDRV_O_NOCACHE is _not_ set - the 'break' statement
needs to be executed to 'fall back' to SG_IO.

Cc: address@hidden
Signed-off-by: Ulrich Obergfell <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
(cherry picked from commit 2fe5a9f73b3446690db2cae8a58473b0b4beaa32)
Signed-off-by: Michael Roth <address@hidden>
 hw/scsi/scsi-disk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 48a28ae..da8c436 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -2520,7 +2520,7 @@ static SCSIRequest *scsi_block_new_request(SCSIDevice *d, 
uint32_t tag,
         * ones (such as WRITE SAME or EXTENDED COPY, etc.).  So, without
         * O_DIRECT everything must go through SG_IO.
-        if (bdrv_get_flags(s->qdev.conf.bs) & BDRV_O_NOCACHE) {
+        if (!(bdrv_get_flags(s->qdev.conf.bs) & BDRV_O_NOCACHE)) {

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