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

Message ID 20240912083020.3720233-1-ruanjinjie@huawei.com (mailing list archive)
Headers show
Series drm: Use IRQF_NO_AUTOEN flag in request_irq() | expand

Message

Jinjie Ruan Sept. 12, 2024, 8:30 a.m. UTC 
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(-)