linux-kernel - [PATCH 5/5] scsi: st: make st_sysfs

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Message-Id: <20240302-class_cleanup-scsi-v1-5-b9096b990e27@marliere.net>
Date: Sat, 02 Mar 2024 13:47:26 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Doug Gilbert <dgilbert@...erlog.com>, 
 "James E.J. Bottomley" <jejb@...ux.ibm.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>, 
 "Manoj N. Kumar" <manoj@...ux.ibm.com>, 
 "Matthew R. Ochs" <mrochs@...ux.ibm.com>, 
 Uma Krishnan <ukrishn@...ux.ibm.com>, 
 Kai Mäkisara <Kai.Makisara@...umbus.fi>
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 5/5] scsi: st: make st_sysfs_class constant

Since commit 43a7206b0963 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the st_sysfs_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 drivers/scsi/st.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 338aa8c42968..5a9bcf8e0792 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -87,7 +87,7 @@ static int try_rdio = 1;
 static int try_wdio = 1;
 static int debug_flag;

-static struct class st_sysfs_class;
+static const struct class st_sysfs_class;
 static const struct attribute_group *st_dev_groups[];
 static const struct attribute_group *st_drv_groups[];

@@ -4438,7 +4438,7 @@ static void scsi_tape_release(struct kref *kref)
 	return;
 }

-static struct class st_sysfs_class = {
+static const struct class st_sysfs_class = {
 	.name = "scsi_tape",
 	.dev_groups = st_dev_groups,
 };

-- 
2.43.0