This is a note to let you know that I've just added the patch titled drm/msm/dp: fix error check return value of irq_of_parse_and_map() to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-msm-dp-fix-error-check-return-value-of-irq_of_pa.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 3bdf89cd4ea92373c6d520f50a8d17c6e5008707 Author: Lv Ruyi <lv.ruyi@xxxxxxxxxx> Date: Sun Apr 24 03:24:18 2022 +0000 drm/msm/dp: fix error check return value of irq_of_parse_and_map() [ Upstream commit e92d0d93f86699b7b25c7906613fdc374d66c8ca ] The irq_of_parse_and_map() function returns 0 on failure, and does not return an negative value. Fixes: 8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets") Reported-by: Zeal Robot <zealci@xxxxxxxxxx> Signed-off-by: Lv Ruyi <lv.ruyi@xxxxxxxxxx> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Patchwork: https://patchwork.freedesktop.org/patch/483176/ Link: https://lore.kernel.org/r/20220424032418.3173632-1-lv.ruyi@xxxxxxxxxx Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 5648c1eb5fa8..00e7d9db6199 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -1216,10 +1216,9 @@ int dp_display_request_irq(struct msm_dp *dp_display) dp = container_of(dp_display, struct dp_display_private, dp_display); dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0); - if (dp->irq < 0) { - rc = dp->irq; - DRM_ERROR("failed to get irq: %d\n", rc); - return rc; + if (!dp->irq) { + DRM_ERROR("failed to get irq\n"); + return -EINVAL; } rc = devm_request_irq(&dp->pdev->dev, dp->irq,