drm/vmwgfx: Fix a layout race condition

Browse source

This fixes a layout update race condition. We make sure
the crtc mutex is locked before we dereference crtc->state. Otherwise the
state might change under us.

Since now we're already holding the crtc mutexes when reading the gui
coordinates, protect them with the crtc mutexes rather than with the
requested_layout mutex.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

...

This commit is contained in:

Thomas Hellstrom 2018-11-12 15:46:39 +01:00

parent 9d9486e437

commit 9da6e26c0a

3 changed files with 39 additions and 37 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

View file

9

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

View file

66

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

View file