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tty: n_gsm: use DEFINE_SPINLOCK() for spinlock

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spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Guobin Huang <huangguobin4@huawei.com>
Link: https://lore.kernel.org/r/1617710163-48158-1-git-send-email-huangguobin4@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guobin Huang 2021-04-06 19:56:03 +08:00 committed by Greg Kroah-Hartman
parent 158e800e0f
commit 399d44a1b1
1 changed files with 1 additions and 3 deletions
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4
drivers/tty/n_gsm.c
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@ -266,7 +266,7 @@ struct gsm_mux {
#define MAX_MUX 4 /* 256 minors */
static struct gsm_mux *gsm_mux[MAX_MUX]; /* GSM muxes */
static spinlock_t gsm_mux_lock;
static DEFINE_SPINLOCK(gsm_mux_lock);
static struct tty_driver *gsm_tty_driver;
@ -3257,8 +3257,6 @@ static int __init gsm_init(void)
gsm_tty_driver->init_termios.c_lflag &= ~ECHO;
tty_set_operations(gsm_tty_driver, &gsmtty_ops);
spin_lock_init(&gsm_mux_lock);
if (tty_register_driver(gsm_tty_driver)) {
put_tty_driver(gsm_tty_driver);
tty_unregister_ldisc(N_GSM0710);