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drm: bridge: adv7511: Add check for mipi_dsi_driver_register

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[ Upstream commit 831463667b5f4f1e5bce9c3b94e9e794d2bc8923 ]

As mipi_dsi_driver_register could return error if fails,
it should be better to check the return value and return error
if fails.
Moreover, if i2c_add_driver fails,  mipi_dsi_driver_register
should be reverted.

Fixes: 1e4d58cd7f ("drm/bridge: adv7533: Create a MIPI DSI device")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220602103401.2980938-1-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2022-06-02 18:34:01 +08:00 • committed by Greg Kroah-Hartman
commit 289079d6c5
1 changed files with 14 additions and 3 deletions
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17
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
View file

@ -1302,10 +1302,21 @@ static struct i2c_driver adv7511_driver = {
static int __init adv7511_init(void)
{
if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
mipi_dsi_driver_register(&adv7533_dsi_driver);
int ret;
return i2c_add_driver(&adv7511_driver);
if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
ret = mipi_dsi_driver_register(&adv7533_dsi_driver);
if (ret)
return ret;
}
ret = i2c_add_driver(&adv7511_driver);
if (ret) {
if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
mipi_dsi_driver_unregister(&adv7533_dsi_driver);
}
return ret;
}
module_init(adv7511_init);