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scsi: mpi3mr: Fix race between config read submit and interrupt completion

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The "is_waiting" flag was updated after calling complete(), which could
lead to a race where the waiting thread wakes up before the flag is
cleared. This may cause a missed wakeup or stale state check.

Reorder the operations to update "is_waiting" before signaling completion
to ensure consistent state.

Fixes: 824a156633 ("scsi: mpi3mr: Base driver code")
Cc: stable@vger.kernel.org
Co-developed-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20250627194539.48851-2-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ranjan Kumar
2025-06-28 01:15:36 +05:30
committed by Martin K. Petersen
parent 19272b37aa
commit e6327c4acf
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/mpi3mr/mpi3mr_fw.c
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@@ -428,8 +428,8 @@ static void mpi3mr_process_admin_reply_desc(struct mpi3mr_ioc *mrioc,
MPI3MR_SENSE_BUF_SZ);
}
if (cmdptr->is_waiting) {
complete(&cmdptr->done);
cmdptr->is_waiting = 0;
complete(&cmdptr->done);
} else if (cmdptr->callback)
cmdptr->callback(mrioc, cmdptr);
}