[PATCH 4/9] drm/radeon: replace vmram_mutex with mclk_lock v2

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 K?nig Reviewed-by: Jerome Glisse --- drivers/gpu/drm/radeon/radeon.h|3 ++- drivers/gp

[PATCH 4/9] drm/radeon: replace vmram_mutex with mclk_lock v2

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 Reviewed-by: Jerome Glisse --- drivers/gpu/drm/radeon/radeon.h|3 ++- drivers/gp