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linux/drivers/scsi/mpi3mr
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Ranjan Kumar f02d8e200c scsi: mpi3mr: Serialize admin queue BAR writes on 32-bit systems 
[ Upstream commit c91e140c82 ]

On 32-bit systems, 64-bit BAR writes to admin queue registers are
performed as two 32-bit writes. Without locking, this can cause partial
writes when accessed concurrently.

Updated per-queue spinlocks is used to serialize these writes and prevent
race conditions.

Fixes: 824a156633 ("scsi: mpi3mr: Base driver code")
Cc: stable@vger.kernel.org
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20250627194539.48851-4-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-08-28 16:31:07 +02:00
..
mpi scsi: mpi3mr: Update MPI Headers to revision 34 2024-09-12 21:10:13 -04:00
Kconfig scsi: mpi3mr: Select CONFIG_SCSI_SAS_ATTRS 2022-10-22 03:14:51 +00:00
Makefile scsi: mpi3mr: Refer CONFIG_SCSI_MPI3MR in Makefile 2022-12-14 03:01:38 +00:00
mpi3mr.h scsi: mpi3mr: Serialize admin queue BAR writes on 32-bit systems 2025-08-28 16:31:07 +02:00
mpi3mr_app.c scsi: mpi3mr: Avoid reply queue full condition 2025-04-20 10:15:16 +02:00
mpi3mr_debug.h scsi: mpi3mr: Update copyright year 2023-03-16 23:54:29 -04:00
mpi3mr_fw.c scsi: mpi3mr: Serialize admin queue BAR writes on 32-bit systems 2025-08-28 16:31:07 +02:00
mpi3mr_os.c scsi: mpi3mr: Serialize admin queue BAR writes on 32-bit systems 2025-08-28 16:31:07 +02:00
mpi3mr_transport.c scsi: mpi3mr: Validate SAS port assignments 2024-10-15 22:17:17 -04:00