RE: [Xen-devel][PATCH]ioemu:fix up error when using qemu-img-xen to create img

["Li, Xin" <xin.li@xxxxxxxxx>]

Hi Ian,
Any comments on this patch? it's a block issue to our QA test.
Thanks!
-Xin

>-----Original Message-----
>From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Zhang, Yang
>Sent: Tuesday, April 21, 2009 9:24 AM
>To: Ian Jackson
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: [Xen-devel][PATCH]ioemu:fix up error when using qemu-img-xen to
>create img
>
>If find_protocol() can not find the the drv. The caller should give
>a default value.
>
>Signed-off-by: Yang Zhang <yang.zhang@xxxxxxxxx>
>
>diff --git a/block.c b/block.c
>index 8a0e8b2..3e84707 100644
>--- a/block.c
>+++ b/block.c
>@@ -306,6 +306,8 @@ static BlockDriver *find_image_format(const char
>*filename)
>     /* no need to test disk image format if the filename told us */
>     if (drv != NULL)
>         return drv;
>+    else
>+        drv = &bdrv_raw;
>
>     ret = bdrv_file_open(&bs, filename, BDRV_O_RDONLY);
>     if (ret < 0)

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