[media] soc-camera: Honor user-requested bytesperline and sizeimage

Compute the bytesperline and sizeimage values when trying/setting
formats or when allocating buffers by taking the user-requested values
into account.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 15 insertions, 14 deletions

diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index d86b15084628..5e3274e55756 100644
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -164,6 +164,7 @@ static int soc_camera_try_fmt(struct soc_camera_device *icd,
                               struct v4l2_format *f)
 {
         struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+        const struct soc_camera_format_xlate *xlate;
         struct v4l2_pix_format *pix = &f->fmt.pix;
         int ret;
 
@@ -177,22 +178,22 @@ static int soc_camera_try_fmt(struct soc_camera_device *icd,
         if (ret < 0)
                 return ret;
 
-        if (!pix->sizeimage) {
-                if (!pix->bytesperline) {
-                        const struct soc_camera_format_xlate *xlate;
+        xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
+        if (!xlate)
+                return -EINVAL;
 
-                        xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
-                        if (!xlate)
-                                return -EINVAL;
+        ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt);
+        if (ret < 0)
+                return ret;
 
-                        ret = soc_mbus_bytes_per_line(pix->width,
-                                                      xlate->host_fmt);
-                        if (ret > 0)
-                                pix->bytesperline = ret;
-                }
-                if (pix->bytesperline)
-                        pix->sizeimage = pix->bytesperline * pix->height;
-        }
+        pix->bytesperline = max_t(u32, pix->bytesperline, ret);
+
+        ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline,
+                                  pix->height);
+        if (ret < 0)
+                return ret;
+
+        pix->sizeimage = max_t(u32, pix->sizeimage, ret);
 
         return 0;
 }