linux-kernel - [PATCH v3 3/6] ata: libata-scsi: Remove redundant sense

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Date: Wed, 26 Jun 2024 23:04:08 +0000
From: Igor Pylypiv <ipylypiv@...gle.com>
To: Damien Le Moal <dlemoal@...nel.org>, Niklas Cassel <cassel@...nel.org>
Cc: Tejun Heo <tj@...nel.org>, Hannes Reinecke <hare@...e.de>, linux-ide@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Igor Pylypiv <ipylypiv@...gle.com>
Subject: [PATCH v3 3/6] ata: libata-scsi: Remove redundant sense_buffer memsets

SCSI layer clears sense_buffer in scsi_queue_rq() so there is no need for
libata to clear it again.

Reviewed-by: Hannes Reinecke <hare@...e.de>
Reviewed-by: Damien Le Moal <dlemoal@...nel.org>
Signed-off-by: Igor Pylypiv <ipylypiv@...gle.com>
---
 drivers/ata/libata-scsi.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 26b1263f5c7c..6b6e35292620 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -926,11 +926,8 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
 {
 	struct scsi_cmnd *cmd = qc->scsicmd;
 	struct ata_taskfile *tf = &qc->result_tf;
-	unsigned char *sb = cmd->sense_buffer;
 	u8 sense_key, asc, ascq;
 
-	memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
-
 	/*
 	 * Use ata_to_sense_error() to map status register bits
 	 * onto sense key, asc & ascq.
@@ -968,8 +965,6 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
 	u64 block;
 	u8 sense_key, asc, ascq;
 
-	memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
-
 	if (ata_dev_disabled(dev)) {
 		/* Device disabled after error recovery */
 		/* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */
-- 
2.45.2.803.g4e1b14247a-goog