drm/vkms: No need for ->pages_lock in crc work anymore

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We're now guaranteed to no longer race against prepare_fb/cleanup_fb,
which means we can access ->vaddr without having to hold a lock.

Before the previous patches it was fairly easy to observe the cursor
->vaddr being invalid, but that's now gone, so we can upgrade to a
full WARN_ON.

Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Tested-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190606222751.32567-11-daniel.vetter@ffwll.ch

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Daniel Vetter 2019-06-07 00:27:51 +02:00 • committed by Rodrigo Siqueira

parent 8b18658736

commit e5ff5344f4

1 changed files with 2 additions and 11 deletions

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drivers/gpu/drm/vkms/vkms_crc.c

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