1b26ba73b1
[ Upstream commit 89b14485caa4b7b2eaf70be0064f0978e68ebeee ]
The csc/scaler device private struct is released by
ipu_csc_scaler_video_device_release(), which can be called
by video_unregister_device() if there are no users
of the underlying struct video device.
Therefore, the mutex can't be held when calling
video_unregister_device() as its memory may be freed
by it, leading to a kernel oops.
Fortunately, the fix is quite simple as no locking
is needed when calling video_unregister_device(): v4l2-core
already has its own internal locking, and the structures
are also properly refcounted.
Fixes:
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|---|---|---|
| .. | ||
| allegro-dvt | ||
| hantro | ||
| imx | ||
| ipu3 | ||
| meson/vdec | ||
| omap4iss | ||
| soc_camera | ||
| sunxi | ||
| tegra-vde | ||
| Kconfig | ||
| Makefile | ||