[lkml]   [2017]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 4.10 013/167] [media] am437x-vpfe: always assign bpp variable
4.10-stable review patch.  If anyone has any objections, please let me know.


From: Nicolas Iooss <>

commit 6ebf75774f823ddbdbd10921006989d4df222f4a upstream.

In vpfe_s_fmt(), when the sensor format and the requested format were
the same, bpp was assigned to vpfe->bpp without being initialized first.

Grab the bpp value that is currently used by using __vpfe_get_format()
instead of its wrapper, vpfe_try_fmt().

This use of uninitialized variable has been found by compiling the
kernel with clang.

Fixes: 417d2e507edc ("[media] media: platform: add VPFE capture driver
support for AM437X")

Signed-off-by: Nicolas Iooss <>
Signed-off-by: Hans Verkuil <>
Signed-off-by: Mauro Carvalho Chehab <>
Signed-off-by: Greg Kroah-Hartman <>

drivers/media/platform/am437x/am437x-vpfe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/platform/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/am437x/am437x-vpfe.c
@@ -1576,7 +1576,7 @@ static int vpfe_s_fmt(struct file *file,
return -EBUSY;

- ret = vpfe_try_fmt(file, priv, &format);
+ ret = __vpfe_get_format(vpfe, &format, &bpp);
if (ret)
return ret;

 \ /
  Last update: 2017-03-10 11:33    [W:0.475 / U:3.724 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site