[PATCH v2 0/5] drm: Use IRQF_NO_AUTOEN flag in request_irq()

From: Jinjie Ruan
Date: Thu Sep 12 2024 - 04:21:28 EST


As commit cbe16f35bee6 ("genirq: Add IRQF_NO_AUTOEN for request_irq/nmi()")
said, reqeust_irq() and then disable_irq() is unsafe. In the small time gap
between request_irq() and disable_irq(), interrupts can still come.

IRQF_NO_AUTOEN flag can be used by drivers to request_irq(). It prevents
the automatic enabling of the requested interrupt in the same
safe way. With that the usage can be simplified and corrected.

Compile-tested only.

Changes in v2:
- Correct the commit subject.
- Add reviewed-by.

Jinjie Ruan (5):
drm/imx: Use IRQF_NO_AUTOEN flag in request_irq()
drm/imx/dcss: Use IRQF_NO_AUTOEN flag in request_irq()
drm/imx/ipuv3: Use IRQF_NO_AUTOEN flag in request_irq()
drm/tegra: dpaux: Use IRQF_NO_AUTOEN flag in request_irq()
drm/msm/adreno: Use IRQF_NO_AUTOEN flag in request_irq()

drivers/gpu/drm/imx/dcss/dcss-crtc.c | 6 ++----
drivers/gpu/drm/imx/dcss/dcss-dtg.c | 4 +---
drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c | 6 ++----
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 +---
drivers/gpu/drm/tegra/dpaux.c | 4 +---
5 files changed, 7 insertions(+), 17 deletions(-)

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2.34.1