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Subject[PATCH v2] drivers/media/v4l2-core/v4l2-h264 : add detection of null pointers
Date
When the pointer variable is judged to be null, null is returned
directly.

Signed-off-by: Dong Chuanjian <chuanjian@nfschina.com>
---
v2: Directly return when pointer allocation fails.

diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c
index 72bd64f65198..0e7b35ae3e94 100644
--- a/drivers/media/v4l2-core/v4l2-h264.c
+++ b/drivers/media/v4l2-core/v4l2-h264.c
@@ -343,6 +343,8 @@ static const char *format_ref_list_b(const struct v4l2_h264_reflist_builder *bui
int n = 0, i;

*out_str = kmalloc(tmp_str_size, GFP_KERNEL);
+ if (*out_str == NULL)
+ return NULL;

n += snprintf(*out_str + n, tmp_str_size - n, "|");

@@ -356,7 +358,6 @@ static const char *format_ref_list_b(const struct v4l2_h264_reflist_builder *bui
longterm ? 'l' : 's',
ref_type_to_char(reflist[i].fields));
}
-
return *out_str;
}

--
2.18.2
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