From: Niklas Cassel <cassel@kernel.org>
To: Damien Le Moal <dlemoal@kernel.org>, Niklas Cassel <cassel@kernel.org>
Cc: Hannes Reinecke <hare@suse.de>, linux-ide@vger.kernel.org
Subject: [PATCH] ata: libata-scsi: Remove superfluous local_irq_save()
Date: Thu, 4 Dec 2025 14:18:04 +0100 [thread overview]
Message-ID: <20251204131804.946417-2-cassel@kernel.org> (raw)
Commit 28a3fc2295a7 ("libata: implement ZBC IN translation") added
ata_scsi_report_zones_complete(). Since the beginning, this function
has disabled IRQs on the local CPU using local_irq_save().
qc->complete_fn is always called with ap->lock held, and the ap->lock
is always taking using spin_lock_irq*().
Thus, this local_irq_save() is superfluous and can be removed.
Signed-off-by: Niklas Cassel <cassel@kernel.org>
---
drivers/ata/libata-scsi.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 434774e71fe61..86d283d340e32 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3572,13 +3572,13 @@ static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *scmd = qc->scsicmd;
struct sg_mapping_iter miter;
- unsigned long flags;
unsigned int bytes = 0;
+ lockdep_assert_held(qc->ap->lock);
+
sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd),
SG_MITER_TO_SG | SG_MITER_ATOMIC);
- local_irq_save(flags);
while (sg_miter_next(&miter)) {
unsigned int offset = 0;
@@ -3626,7 +3626,6 @@ static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc)
}
}
sg_miter_stop(&miter);
- local_irq_restore(flags);
ata_scsi_qc_complete(qc);
}
--
2.52.0
next reply other threads:[~2025-12-04 13:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 13:18 Niklas Cassel [this message]
2025-12-04 13:21 ` [PATCH] ata: libata-scsi: Remove superfluous local_irq_save() Niklas Cassel
2025-12-05 7:31 ` Hannes Reinecke
2025-12-08 0:01 ` Damien Le Moal
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