From: Jiasheng Jiang <[email protected]> [ 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 <[email protected]> Reviewed-by: Abhinav Kumar <[email protected]> Patchwork: https://patchwork.freedesktop.org/patch/517646/ Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Dmitry Baryshkov <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/gpu/drm/msm/dsi/dsi_host.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 56cfa0a03fd5b..059578faa1c6d 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1883,6 +1883,9 @@ 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); -- 2.39.0
