Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.18 370/879] drm/msm/dp: fix error check return value of irq_of_parse_and_map() | Date | Tue, 7 Jun 2022 18:58:08 +0200 |
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From: Lv Ruyi <lv.ruyi@zte.com.cn>
[ 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@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/483176/ Link: https://lore.kernel.org/r/20220424032418.3173632-1-lv.ruyi@zte.com.cn Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/gpu/drm/msm/dp/dp_display.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 332065b882af..b3bfe9ac9d80 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -1255,10 +1255,9 @@ 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, -- 2.35.1
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