Hello Liu,
On Wed, 6 Aug 2025 17:52:24 +0800
Liu Ying <victor....@nxp.com> wrote:
> devm_drm_bridge_alloc() returns ERR_PTR on failure instead of a
> NULL pointer, so use IS_ERR() to check the returned pointer.
> While at it, on failure, return ERR_CAST(dp) instead of
> ERR_PTR(-ENOMEM) in order not to depend on devm_drm_bridge_alloc()
> error code implementation.
>
> Fixes: 48f05c3b4b70 ("drm/bridge: analogix_dp: Use devm_drm_bridge_alloc()
> API")
> Signed-off-by: Liu Ying <victor....@nxp.com>
> ---
> v2:
> - Return ERR_CAST(dp) on failure. (Luca)
>
> drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> index ed35e567d117..efe534977d12 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> @@ -1474,8 +1474,8 @@ analogix_dp_probe(struct device *dev, struct
> analogix_dp_plat_data *plat_data)
>
> dp = devm_drm_bridge_alloc(dev, struct analogix_dp_device, bridge,
> &analogix_dp_bridge_funcs);
> - if (!dp)
> - return ERR_PTR(-ENOMEM);
> + if (IS_ERR(dp))
> + return ERR_CAST(dp);
Reviewed-by: Luca Ceresoli <luca.ceres...@bootlin.com>
--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
