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media: davinci/vpbe: array underflow in vpbe_enum_outputs()

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In vpbe_enum_outputs() we check if (temp_index >= cfg->num_outputs) but
the problem is that "temp_index" can be negative.  This patch changes
the types to unsigned to address this array underflow bug.

Fixes: 66715cdc32 ("[media] davinci vpbe: VPBE display driver")

Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: "Lad, Prabhakar" <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Dan Carpenter 2019-04-24 05:46:27 -04:00 • committed by Mauro Carvalho Chehab
commit b72845ee55
2 changed files with 2 additions and 2 deletions
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include/media/davinci/vpbe.h
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@ -92,7 +92,7 @@ struct vpbe_config {
struct encoder_config_info *ext_encoders;
/* amplifier information goes here */
struct amp_config_info *amp;
int num_outputs;
unsigned int num_outputs;
/* Order is venc outputs followed by LCD and then external encoders */
struct vpbe_output *outputs;
};