[media] s5p-fimc: Fix wrong buffer size in queue_setup

Avoid dereferencing of NULL f->fmt. Correct size of the allocated
buffer in case the crop rectangle is smaller than the bounds
rectangle (configured with S_FMT). Also remove redundant check
for *num_buffer == 0 as this case is handled in videobuf2.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c
index c427edd..85b47a3 100644 (file)
--- a/drivers/media/video/s5p-fimc/fimc-core.c
+++ b/drivers/media/video/s5p-fimc/fimc-core.c
@@ -704,22 +704,18 @@ static int fimc_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
        f = ctx_get_frame(ctx, vq->type);
        if (IS_ERR(f))
                return PTR_ERR(f);
-
        /*
         * Return number of non-contigous planes (plane buffers)
         * depending on the configured color format.
         */
-       if (f->fmt)
-               *num_planes = f->fmt->memplanes;
+       if (!f->fmt)
+               return -EINVAL;
 
+       *num_planes = f->fmt->memplanes;
        for (i = 0; i < f->fmt->memplanes; i++) {
-               sizes[i] = (f->width * f->height * f->fmt->depth[i]) >> 3;
+               sizes[i] = (f->f_width * f->f_height * f->fmt->depth[i]) / 8;
                allocators[i] = ctx->fimc_dev->alloc_ctx;
        }
-
-       if (*num_buffers == 0)
-               *num_buffers = 1;
-
        return 0;
 }