drm: Extract drm_master_open

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And pull out the primary_client check to make it really obvious that
this can't happen on control/render nodes. Bonus that we can avoid the
master lock in this case.

v2: Don't leak locks on error path (and simplify control flow while
at it), reported by Julia.

Cc: Julia Lawall <julia.lawall@lip6.fr>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465930269-7883-6-git-send-email-daniel.vetter@ffwll.ch

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This commit is contained in:

Daniel Vetter 2016-06-14 20:51:00 +02:00

parent 6548f4e7a3

commit 2cbae7e637

3 changed files with 21 additions and 13 deletions

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19

drivers/gpu/drm/drm_auth.c

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13

drivers/gpu/drm/drm_fops.c

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2

drivers/gpu/drm/drm_internal.h

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