Calling disable_irq() right after devm_request_irq() is a bad practice.
it leaves a small window when the driver doesn't expect the IRQ, but the
hardware still can trigger it. Use the IRQF_NO_AUTOEN flag to prevent
the request_irq from enabling the IRQ line.
Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
drivers/gpu/drm/msm/dp/dp_display.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index bfd0aeff3f0d..3173e6962a78 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1251,13 +1251,12 @@ int dp_display_request_irq(struct msm_dp *dp_display)
rc = devm_request_irq(&dp->pdev->dev, dp->irq,
dp_display_irq_handler,
- IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
+ IRQF_TRIGGER_HIGH | IRQF_NO_AUTOEN, "dp_display_isr",
dp);
if (rc < 0) {
DRM_ERROR("failed to request IRQ%u: %d\n",
dp->irq, rc);
return rc;
}
- disable_irq(dp->irq);
return 0;
}
--
2.35.1
