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8d61521e0a
[Why] mutex_is_locked() only tells whether *some* task holds the mutex, not the current one, so the existing ASSERT can silently pass when the caller violates the contract. [How] Use the kernel's lockdep debugging utility (include/linux/lockdep.h) and replace ASSERT(mutex_is_locked(&dm->dc_lock)) with lockdep_assert_held(&dm->dc_lock), which checks the current task's held-lock stack. Reviewed-by: Sun peng (Leo) Li <sunpeng.li@amd.com> Signed-off-by: Ray Wu <ray.wu@amd.com> Signed-off-by: Ivan Lipski <ivan.lipski@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>