drm/radeon: replace vmram_mutex with mclk_lock v2
authorChristian König <deathsimple@vodafone.de>
Fri, 11 May 2012 12:57:18 +0000 (14:57 +0200)
committerChristian König <deathsimple@vodafone.de>
Thu, 21 Jun 2012 07:38:43 +0000 (09:38 +0200)
It is a rw_semaphore now and only write locked
while changing the clock. Also the lock is renamed
to better reflect what it is protecting.

v2: Keep the ttm_vm_ops on IGPs

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>

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