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Commit 98ffb324 authored by Lynus Vaz's avatar Lynus Vaz
Browse files

msm: kgsl: Prevent a deadlock when removing debugfs nodes 



Release the kgsl process mutex before removing the process kgsl
debugfs nodes to prevent a deadlock.

Change-Id: I5ef83e54252991cf552807c39639e3ef6fa03969
Signed-off-by: default avatarLynus Vaz <lvaz@codeaurora.org>
parent 70be28c9

drivers/gpu/msm/kgsl.c

+4 −3
Original line number Diff line number Diff line
@@ -989,7 +989,6 @@ static void kgsl_process_private_close(struct kgsl_device_private *dev_priv, 
	 */



	kgsl_process_uninit_sysfs(private);

	debugfs_remove_recursive(private->debug_root);



	process_release_sync_sources(private);
@@ -1001,12 +1000,14 @@ static void kgsl_process_private_close(struct kgsl_device_private *dev_priv, 
	list_del(&private->list);



	/*

	 * Unlock the mutex before releasing the memory - this prevents a

	 * deadlock with the IOMMU mutex if a page fault occurs

	 * Unlock the mutex before releasing the memory and the debugfs

	 * nodes - this prevents deadlocks with the IOMMU and debugfs

	 * locks.

	 */

	mutex_unlock(&kgsl_driver.process_mutex);



	process_release_memory(private);

	debugfs_remove_recursive(private->debug_root);



	kgsl_process_private_put(private);

}