Commit 3a9a4a97 authored Jan 10, 2023 by Jiasheng Jiang Committed by Greg Kroah-Hartman Mar 11, 2023

drm/msm/dsi: Add missing check for alloc_ordered_workqueue



[ Upstream commit 115906ca7b535afb1fe7b5406c566ccd3873f82b ]

Add check for the return value of alloc_ordered_workqueue as it may return
NULL pointer and cause NULL pointer dereference.

Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/517646/
Link: https://lore.kernel.org/r/20230110021651.12770-1-jiasheng@iscas.ac.cn


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent f9f55fc6

drivers/gpu/drm/msm/dsi/dsi_host.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1877,6 +1877,9 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)

		/* setup workqueue */
		msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0);
		if (!msm_host->workqueue)
		return -ENOMEM;

		INIT_WORK(&msm_host->err_work, dsi_err_worker);
		INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker);