Re: [PATCH 2/3] drm/bridge: ps8640: Print an error if VDO control fails

Sam Ravnborg
2020-08-22T09:23:14Z

On Mon, Jun 15, 2020 at 10:53:19PM +0200, Enric Balletbo i Serra wrote:
> Print an error message inside ps8640_bridge_vdo_control() function when
> it fails so we can simplify a bit the callers, they will only need to
> check the error code.
>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>

> ---
>
> drivers/gpu/drm/bridge/parade-ps8640.c | 13 ++++++-------
> 1 file changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
> index ce3e8b2da8c9b..9f7b7a9c53c52 100644
> --- a/drivers/gpu/drm/bridge/parade-ps8640.c
> +++ b/drivers/gpu/drm/bridge/parade-ps8640.c
> @@ -82,8 +82,11 @@ static int ps8640_bridge_vdo_control(struct ps8640 *ps_bridge,
> ret = i2c_smbus_write_i2c_block_data(client, PAGE3_SET_ADD,
> sizeof(vdo_ctrl_buf),
> vdo_ctrl_buf);
> - if (ret < 0)
> + if (ret < 0) {
> + DRM_ERROR("failed to %sable VDO: %d\n",
> + ctrl == ENABLE ? "en" : "dis", ret);
> return ret;
> + }
>
> return 0;
> }
> @@ -150,10 +153,8 @@ static void ps8640_pre_enable(struct drm_bridge *bridge)
> }
>
> ret = ps8640_bridge_vdo_control(ps_bridge, ENABLE);
> - if (ret) {
> - DRM_ERROR("failed to enable VDO: %d\n", ret);
> + if (ret)
> goto err_regulators_disable;
> - }
>
> /* Switch access edp panel's edid through i2c */
> ret = i2c_smbus_write_byte_data(client, PAGE2_I2C_BYPASS,
> @@ -175,9 +176,7 @@ static void ps8640_post_disable(struct drm_bridge *bridge)
> struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);
> int ret;
>
> - ret = ps8640_bridge_vdo_control(ps_bridge, DISABLE);
> - if (ret < 0)
> - DRM_ERROR("failed to disable VDO: %d\n", ret);
> + ps8640_bridge_vdo_control(ps_bridge, DISABLE);
>
> gpiod_set_value(ps_bridge->gpio_reset, 1);
> gpiod_set_value(ps_bridge->gpio_powerdown, 1);
> --
> 2.27.0
>
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