diff options
| author | Ranjan Kumar <ranjan.kumar@broadcom.com> | 2025-08-22 10:46:42 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:31:07 +0200 |
| commit | f02d8e200cb5eb16ae70d7f59088a292a247c7fc (patch) | |
| tree | 198be0023710d628950971399a9a2abce2a27c08 /drivers/cdx/controller/cdx_rpmsg.c | |
| parent | 95ba8440f72d74cc3a5f6d36acaf08d78257a7e1 (diff) | |
scsi: mpi3mr: Serialize admin queue BAR writes on 32-bit systems
[ Upstream commit c91e140c82eb58724c435f623702e51cc7896646 ]
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: 824a156633df ("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>
Diffstat (limited to 'drivers/cdx/controller/cdx_rpmsg.c')
0 files changed, 0 insertions, 0 deletions