drm/ttm: remove unneeded preempt_disable/enable
It is unnecessary to disable preemption explicitly while calling
copy_highpage(). Because copy_highpage() will do it again through
kmap_atomic/kunmap_atomic.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index bf82601..7d759a4 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -308,9 +308,7 @@
if (unlikely(to_page == NULL))
goto out_err;
- preempt_disable();
copy_highpage(to_page, from_page);
- preempt_enable();
page_cache_release(from_page);
}
@@ -358,9 +356,7 @@
ret = PTR_ERR(to_page);
goto out_err;
}
- preempt_disable();
copy_highpage(to_page, from_page);
- preempt_enable();
set_page_dirty(to_page);
mark_page_accessed(to_page);
page_cache_release(to_page);