linux-kernel - [PATCH v4 1/8] parport: Move magic number "15" to a define

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Date:   Tue, 23 May 2023 14:22:13 +0200
From:   Joel Granados <j.granados@...sung.com>
To:     <mcgrof@...nel.org>
CC:     Christian Brauner <brauner@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Joel Granados <j.granados@...sung.com>,
        <linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH v4 1/8] parport: Move magic number "15" to a define

Put the size of a parport name behind a define so we can use it in other
files. This is a preparation patch to be able to use this size in
parport/procfs.c.

Signed-off-by: Joel Granados <j.granados@...sung.com>
Reviewed-by: Luis Chamberlain <mcgrof@...nel.org>
Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/parport/share.c | 2 +-
 include/linux/parport.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/parport/share.c b/drivers/parport/share.c
index 62f8407923d4..2d46b1d4fd69 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -467,7 +467,7 @@ struct parport *parport_register_port(unsigned long base, int irq, int dma,
 	atomic_set(&tmp->ref_count, 1);
 	INIT_LIST_HEAD(&tmp->full_list);
 
-	name = kmalloc(15, GFP_KERNEL);
+	name = kmalloc(PARPORT_NAME_MAX_LEN, GFP_KERNEL);
 	if (!name) {
 		kfree(tmp);
 		return NULL;
diff --git a/include/linux/parport.h b/include/linux/parport.h
index a0bc9e0267b7..243c82d7f852 100644
--- a/include/linux/parport.h
+++ b/include/linux/parport.h
@@ -180,6 +180,8 @@ struct ieee1284_info {
 	struct semaphore irq;
 };
 
+#define PARPORT_NAME_MAX_LEN 15
+
 /* A parallel port */
 struct parport {
 	unsigned long base;	/* base address */
-- 
2.30.2