dmaengine: idxd: remove interrupt flag for completion list spinlock

mainline inclusion
from mainline-v5.15
commit 9fce3b3a
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO


CVE: NA

Intel-SIG: commit 9fce3b3a dmaengine: idxd: remove interrupt flag for completion list spinlock.
Incremental backporting patches for DSA/IAA on Intel Xeon platform.

--------------------------------

The list lock is never acquired in interrupt context. Therefore there is no
need to disable interrupts. Remove interrupt flags for lock operations.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162826417450.3454650.3733188117742416238.stgit@djiang5-desk3.ch.intel.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>