tree b8e95f24e697b0876cf4e28ead5c1b314af178bc
parent d54fbd49efe5c75bc7cf963bf065aef3fd22417a
author Jerome Glisse <jglisse@redhat.com> 1327337535 -0500
committer Dave Airlie <airlied@redhat.com> 1327484526 +0000

drm/radeon: avoid deadlock if GPU lockup is detected in ib_pool_get

If GPU lockup is detected in ib_pool get we are holding the ib_pool
mutex that will be needed by the GPU reset code. As ib_pool code is
safe to be reentrant from GPU reset code we should not block if we
are trying to get the ib pool lock on the behalf of the same userspace
caller, thus use the radeon_mutex_lock helper.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>