linux-kernel - [PATCH v3 2/6] tty: n_gsm: name gsm tty device minors

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Message-Id: <20220831073800.7459-2-daniel.starke@siemens.com>
Date:   Wed, 31 Aug 2022 09:37:56 +0200
From:   "D. Starke" <daniel.starke@...mens.com>
To:     linux-serial@...r.kernel.org, gregkh@...uxfoundation.org,
        jirislaby@...nel.org
Cc:     linux-kernel@...r.kernel.org,
        Daniel Starke <daniel.starke@...mens.com>
Subject: [PATCH v3 2/6] tty: n_gsm: name gsm tty device minors

From: Daniel Starke <daniel.starke@...mens.com>

Add a macro which defines the possible number of virtual devices for n_gsm
to improve code readability.

Reviewed-by: Jiri Slaby <jirislaby@...nel.org>
Signed-off-by: Daniel Starke <daniel.starke@...mens.com>
---
 drivers/tty/n_gsm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Added reviewed-by line since v2. No other changes done.

Link: https://lore.kernel.org/all/dae848f0-6817-a281-94b3-9d2b6f84c90d@kernel.org/

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 3fa859a29317..813363825e54 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -164,6 +164,9 @@ struct gsm_dlci {
 	struct net_device *net; /* network interface, if created */
 };
 
+/* Total number of supported devices */
+#define GSM_TTY_MINORS		256
+
 /* DLCI 0, 62/63 are special or reserved see gsmtty_open */
 
 #define NUM_DLCI		64
@@ -3749,7 +3752,7 @@ static int __init gsm_init(void)
 		return status;
 	}
 
-	gsm_tty_driver = tty_alloc_driver(256, TTY_DRIVER_REAL_RAW |
+	gsm_tty_driver = tty_alloc_driver(GSM_TTY_MINORS, TTY_DRIVER_REAL_RAW |
 			TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
 	if (IS_ERR(gsm_tty_driver)) {
 		pr_err("gsm_init: tty allocation failed.\n");
-- 
2.34.1