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media: vicodec: make life easier for static analyzers 

cppcheck incorrectly produces an error here:
	[drivers/media/platform/vicodec/vicodec-core.c:1677]: (error) Pointer addition with NULL pointer.

While this is actually a false positive, it doesn't hurt to
reorder the checks to make the code simpler, handling first
the error patch, where no color or alpha components are there.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2019-08-22 11:41:45 -03:00
parent 59364e971c
commit cb8045072a
1 changed files with 7 additions and 4 deletions
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11
drivers/media/platform/vicodec/vicodec-core.c
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@ -1664,19 +1664,22 @@ static int vicodec_start_streaming(struct vb2_queue *q,
kvfree(state->compressed_frame);
state->compressed_frame = new_comp_frame;
if (info->components_num >= 3) {
state->ref_frame.cb = state->ref_frame.luma + size;
state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
} else {
if (info->components_num < 3) {
state->ref_frame.cb = NULL;
state->ref_frame.cr = NULL;
state->ref_frame.alpha = NULL;
return 0;
}
state->ref_frame.cb = state->ref_frame.luma + size;
state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
if (info->components_num == 4)
state->ref_frame.alpha =
state->ref_frame.cr + size / chroma_div;
else
state->ref_frame.alpha = NULL;
return 0;
}