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drm/msm/hdmi: Add missing check for alloc_ordered_workqueue

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[ Upstream commit afe4cb96153a0d8003e4e4ebd91b5c543e10df84 ]

Add check for the return value of alloc_ordered_workqueue as it may return
NULL pointer and cause NULL pointer dereference in `hdmi_hdcp.c` and
`hdmi_hpd.c`.

Fixes: c6a57a50ad ("drm/msm/hdmi: add hdmi hdcp support (V3)")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/517211/
Link: https://lore.kernel.org/r/20230106023011.3985-1-jiasheng@iscas.ac.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang
2023-01-06 10:30:11 +08:00
committed by Greg Kroah-Hartman
parent 8eb74bd9c9
commit 1bab31a096
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/msm/hdmi/hdmi.c
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@@ -264,6 +264,10 @@ static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
if (!hdmi->workq) {
ret = -ENOMEM;
goto fail;
}
hdmi->i2c = msm_hdmi_i2c_init(hdmi);
if (IS_ERR(hdmi->i2c)) {