From fc803a39c42ad3887796cb3afbf7bdd4221199bf Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Mon, 23 Feb 2026 14:00:29 -0800 Subject: [PATCH] scsi: fnic: Make fnic_queuecommand() easier to analyze Move a spin_unlock_irqrestore() call such that the io_lock_acquired variable can be eliminated. This patch prepares for enabling the Clang thread-safety analyzer. Cc: Satish Kharat Cc: Sesidhar Baddela Cc: Karan Tilak Kumar Cc: James E.J. Bottomley Cc: Martin K. Petersen Cc: linux-scsi@vger.kernel.org Signed-off-by: Bart Van Assche Reviewed-by: Karan Tilak Kumar Link: https://patch.msgid.link/20260223220102.2158611-30-bart.vanassche@linux.dev Signed-off-by: Martin K. Petersen --- drivers/scsi/fnic/fnic_scsi.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index 7e41bb8a7628..6ee3c559e129 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -471,7 +471,6 @@ enum scsi_qc_status fnic_queuecommand(struct Scsi_Host *shost, int sg_count = 0; unsigned long flags = 0; unsigned long ptr; - int io_lock_acquired = 0; uint16_t hwq = 0; struct fnic_tport_s *tport = NULL; struct rport_dd_data_s *rdd_data; @@ -636,7 +635,6 @@ enum scsi_qc_status fnic_queuecommand(struct Scsi_Host *shost, spin_lock_irqsave(&fnic->wq_copy_lock[hwq], flags); /* initialize rest of io_req */ - io_lock_acquired = 1; io_req->port_id = rport->port_id; io_req->start_time = jiffies; fnic_priv(sc)->state = FNIC_IOREQ_CMD_PENDING; @@ -689,6 +687,9 @@ enum scsi_qc_status fnic_queuecommand(struct Scsi_Host *shost, /* REVISIT: Use per IO lock in the final code */ fnic_priv(sc)->flags |= FNIC_IO_ISSUED; } + + spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags); + out: cmd_trace = ((u64)sc->cmnd[0] << 56 | (u64)sc->cmnd[7] << 40 | (u64)sc->cmnd[8] << 32 | (u64)sc->cmnd[2] << 24 | @@ -699,10 +700,6 @@ enum scsi_qc_status fnic_queuecommand(struct Scsi_Host *shost, mqtag, sc, io_req, sg_count, cmd_trace, fnic_flags_and_state(sc)); - /* if only we issued IO, will we have the io lock */ - if (io_lock_acquired) - spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags); - atomic_dec(&fnic->in_flight); atomic_dec(&tport->in_flight);