Hi Chenyuan Yang,
Thanks for the patch.
> -----Original Message-----
> From: Chenyuan Yang <chenyua...@gmail.com>
> Sent: 22 July 2025 21:41
> Subject: [PATCH] drm/bridge: Add null pointer check for ITE IT6263
>
> drm_atomic_get_new_connector_for_encoder and
> drm_atomic_get_new_connector_state could return Null.
> Thus, add the null pointer check for them with a similar format with
> it6505_bridge_atomic_enable in
> ITE IT6505.
>
> Signed-off-by: Chenyuan Yang <chenyua...@gmail.com>
> Fixes: 049723628716 ("drm/bridge: Add ITE IT6263 LVDS to HDMI converter")
Normally Fixes should be above Sb tag.
> ---
> drivers/gpu/drm/bridge/ite-it6263.c | 15 ++++++++++++++-
> 1 file changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/ite-it6263.c
> b/drivers/gpu/drm/bridge/ite-it6263.c
> index a3a63a977b0a..3a20b2088bf9 100644
> --- a/drivers/gpu/drm/bridge/ite-it6263.c
> +++ b/drivers/gpu/drm/bridge/ite-it6263.c
> @@ -590,15 +590,28 @@ static void it6263_bridge_atomic_enable(struct
> drm_bridge *bridge,
> struct drm_connector *connector;
> bool is_stable = false;
> struct drm_crtc *crtc;
> + struct drm_connector_state *conn_state;
Please arrange it in reverse X-mas tree fashion.
> unsigned int val;
> bool pclk_high;
> int i, ret;
>
> connector = drm_atomic_get_new_connector_for_encoder(state,
> bridge->encoder);
> - crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
> + if (WARN_ON(!connector))
Why WARN_ON everywhere? Can we use dev_err instead?
Cheers,
Biju
> + return;
> +
> + conn_state = drm_atomic_get_new_connector_state(state, connector);
> + if (WARN_ON(!conn_state))
> + return;
> +
> + crtc = conn_state->crtc;
> crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
> + if (WARN_ON(!crtc_state))
> + return;
> +
> mode = &crtc_state->adjusted_mode;
> + if (WARN_ON(!mode))
> + return;
>
> regmap_write(regmap, HDMI_REG_HDMI_MODE, TX_HDMI_MODE);
>
> --
> 2.34.1
