From: Christophe JAILLET christophe.jaillet@wanadoo.fr
stable inclusion from stable-v6.6.2 commit 212203ef4f5c95523780114e9bac2e99f74074c8 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 44b968d0d0868b7a9b7a5c64464ada464ff4d532 ]
cdn_dp_audio_codec_init() can fail. So add some error handling.
If component_add() fails, the previous cdn_dp_audio_codec_init() call should be undone, as already done in the remove function.
Fixes: 88582f564692 ("drm/rockchip: cdn-dp: Don't unregister audio dev when unbinding") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Signed-off-by: Heiko Stuebner heiko@sntech.de Link: https://patchwork.freedesktop.org/patch/msgid/8494a41602fadb7439630921a97796... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index a29fbafce393..3793863c210e 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -1177,6 +1177,7 @@ static int cdn_dp_probe(struct platform_device *pdev) struct cdn_dp_device *dp; struct extcon_dev *extcon; struct phy *phy; + int ret; int i;
dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL); @@ -1217,9 +1218,19 @@ static int cdn_dp_probe(struct platform_device *pdev) mutex_init(&dp->lock); dev_set_drvdata(dev, dp);
- cdn_dp_audio_codec_init(dp, dev); + ret = cdn_dp_audio_codec_init(dp, dev); + if (ret) + return ret; + + ret = component_add(dev, &cdn_dp_component_ops); + if (ret) + goto err_audio_deinit;
- return component_add(dev, &cdn_dp_component_ops); + return 0; + +err_audio_deinit: + platform_device_unregister(dp->audio_pdev); + return ret; }
static void cdn_dp_remove(struct platform_device *pdev)