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 36caf3d5a9f9..09c8e50da68d 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -1147,10 +1147,9 @@ 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,