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block: Fix compiler warning (-Werror=uninitialized)

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The patch fixes a warning from gcc (Debian 4.6.3-14+rpi1) 4.6.3:

block/stream.c:141:22: error:
‘copy’ may be used uninitialized in this function [-Werror=uninitialized]

This is not a real bug - a better compiler would not complain.

Now 'copy' has always a defined value, so the check for ret >= 0
can be removed.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Weil 2013-09-22 08:19:10 +02:00 committed by Kevin Wolf
parent 030be32184
commit c3e4f43a99
1 changed files with 3 additions and 2 deletions
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5
block/stream.c
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@ -119,11 +119,12 @@ wait:
break;
}
copy = false;
ret = bdrv_is_allocated(bs, sector_num,
STREAM_BUFFER_SIZE / BDRV_SECTOR_SIZE, &n);
if (ret == 1) {
/* Allocated in the top, no need to copy. */
copy = false;
} else if (ret >= 0) {
/* Copy if allocated in the intermediate images. Limit to the
* known-unallocated area [sector_num, sector_num+n). */
@ -138,7 +139,7 @@ wait:
copy = (ret == 1);
}
trace_stream_one_iteration(s, sector_num, n, ret);
if (ret >= 0 && copy) {
if (copy) {
if (s->common.speed) {
delay_ns = ratelimit_calculate_delay(&s->limit, n);
if (delay_ns > 0) {