[PATCH v2] 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.  I've made
cgf->num_outputs unsigned to fix this issue.

Fixes: 66715cdc3224 ("[media] davinci vpbe: VPBE display driver")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
v2: fix it a different way

diff --git a/include/media/davinci/vpbe.h b/include/media/davinci/vpbe.h
index 79a566d7defd..180a05e91497 100644
--- a/include/media/davinci/vpbe.h
+++ b/include/media/davinci/vpbe.h
@@ -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;
 };
--
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