On 5/11/24 23:08, Sui Jingfeng wrote:
> The check on the existence of bridge->encoder on the implementation layer
> of drm bridge driver is not necessary, as it has already been done in the
> drm_bridge_attach() function. It is guaranteed that the .encoder member
> of the drm_bridge instance is not NULL when various imx_xxx_bridge_attach()
> function gets called.
Nit:
ldb_bridge_attach_helper() doesn't follow the fashion of
imx_xxx_bridge_attach(), not even the other bridge attach
functions touched by this patch do. Maybe, reword as
"when various i.MX specific bridge attach functions are
called."
Regards,
Liu Ying
>
> Remove the redundant checking codes "if (!bridge->encoder) { ... }".
>
> Signed-off-by: Sui Jingfeng <sui.jingf...@linux.dev>
> ---
> drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 5 -----
> drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c | 5 -----
> drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c | 5 -----
> drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c | 5 -----
> 4 files changed, 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
> b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
> index 6967325cd8ee..9b5bebbe357d 100644
> --- a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
> +++ b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
> @@ -116,11 +116,6 @@ int ldb_bridge_attach_helper(struct drm_bridge *bridge,
> return -EINVAL;
> }
>
> - if (!bridge->encoder) {
> - DRM_DEV_ERROR(ldb->dev, "missing encoder\n");
> - return -ENODEV;
> - }
> -
> return drm_bridge_attach(bridge->encoder,
> ldb_ch->next_bridge, bridge,
> DRM_BRIDGE_ATTACH_NO_CONNECTOR);
> diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
> b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
> index d0868a6ac6c9..e6dbbdc87ce2 100644
> --- a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
> +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
> @@ -119,11 +119,6 @@ static int imx8qxp_pc_bridge_attach(struct drm_bridge
> *bridge,
> return -EINVAL;
> }
>
> - if (!bridge->encoder) {
> - DRM_DEV_ERROR(pc->dev, "missing encoder\n");
> - return -ENODEV;
> - }
> -
> return drm_bridge_attach(bridge->encoder,
> ch->next_bridge, bridge,
> DRM_BRIDGE_ATTACH_NO_CONNECTOR);
> diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
> b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
> index ed8b7a4e0e11..1d11cc1df43c 100644
> --- a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
> +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
> @@ -138,11 +138,6 @@ static int imx8qxp_pixel_link_bridge_attach(struct
> drm_bridge *bridge,
> return -EINVAL;
> }
>
> - if (!bridge->encoder) {
> - DRM_DEV_ERROR(pl->dev, "missing encoder\n");
> - return -ENODEV;
> - }
> -
> return drm_bridge_attach(bridge->encoder,
> pl->next_bridge, bridge,
> DRM_BRIDGE_ATTACH_NO_CONNECTOR);
> diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
> b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
> index 4a886cb808ca..fb7cf4369bb8 100644
> --- a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
> +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
> @@ -58,11 +58,6 @@ static int imx8qxp_pxl2dpi_bridge_attach(struct drm_bridge
> *bridge,
> return -EINVAL;
> }
>
> - if (!bridge->encoder) {
> - DRM_DEV_ERROR(p2d->dev, "missing encoder\n");
> - return -ENODEV;
> - }
> -
> return drm_bridge_attach(bridge->encoder,
> p2d->next_bridge, bridge,
> DRM_BRIDGE_ATTACH_NO_CONNECTOR);
