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Commit fc34608f authored by Jiasheng Jiang's avatar Jiasheng Jiang Committed by Greg Kroah-Hartman
Browse files

drm/msm/hdmi: Add missing check for alloc_ordered_workqueue 



[ 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: c6a57a50 ("drm/msm/hdmi: add hdmi hdcp support (V3)")
Signed-off-by: default avatarJiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: default avatarDmitry 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: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 62430b32

drivers/gpu/drm/msm/hdmi/hdmi.c

+4 −0
Original line number Diff line number Diff line
@@ -248,6 +248,10 @@ 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)) {