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ide: fix TRIM with empty range entry

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ATA-ACS-3 says "If the two byte range length is zero, then the LBA
Range Entry shall be discarded as padding."  iovecs are used as if
they are linearized, so it is incorrect to discard the rest of
this iovec.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-01-14 16:26:56 +01:00 committed by Stefan Hajnoczi
parent 8238010b26
commit 80bc2e8d80
1 changed files with 1 additions and 1 deletions
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hw/ide/core.c
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@ -374,7 +374,7 @@ BlockDriverAIOCB *ide_issue_trim(BlockDriverState *bs,
uint16_t count = entry >> 48;
if (count == 0) {
break;
continue;
}
ret = bdrv_discard(bs, sector, count);