accel/ivpu: Fix PM related deadlocks in MS IOCTLs
authorJacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Tue, 25 Mar 2025 11:43:06 +0000 (12:43 +0100)
committerJacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Mon, 31 Mar 2025 12:19:05 +0000 (14:19 +0200)
commitd893da85e06edf54737bb80648bb58ba8fd56d9f
tree5f3cd993df00a2ed41479c7e0a681f27d98eada5
parent9a6f56762d23a1f3af15e67901493c927caaf882
accel/ivpu: Fix PM related deadlocks in MS IOCTLs

Prevent runtime resume/suspend while MS IOCTLs are in progress.
Failed suspend will call ivpu_ms_cleanup() that would try to acquire
file_priv->ms_lock, which is already held by the IOCTLs.

Fixes: cdfad4db7756 ("accel/ivpu: Add NPU profiling support")
Cc: stable@vger.kernel.org # v6.11+
Signed-off-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://lore.kernel.org/r/20250325114306.3740022-3-maciej.falkowski@linux.intel.com
drivers/accel/ivpu/ivpu_debugfs.c
drivers/accel/ivpu/ivpu_ms.c