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Diffstat (limited to '')
| -rw-r--r-- | drivers/input/joystick/turbografx.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/input/joystick/turbografx.c b/drivers/input/joystick/turbografx.c index 0a78dda3e0ea..db696ba61a3b 100644 --- a/drivers/input/joystick/turbografx.c +++ b/drivers/input/joystick/turbografx.c @@ -103,33 +103,31 @@ static void tgfx_timer(struct timer_list *t) static int tgfx_open(struct input_dev *dev) { struct tgfx *tgfx = input_get_drvdata(dev); - int err; - err = mutex_lock_interruptible(&tgfx->sem); - if (err) - return err; + scoped_guard(mutex_intr, &tgfx->sem) { + if (!tgfx->used++) { + parport_claim(tgfx->pd); + parport_write_control(tgfx->pd->port, 0x04); + mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); + } - if (!tgfx->used++) { - parport_claim(tgfx->pd); - parport_write_control(tgfx->pd->port, 0x04); - mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); + return 0; } - mutex_unlock(&tgfx->sem); - return 0; + return -EINTR; } static void tgfx_close(struct input_dev *dev) { struct tgfx *tgfx = input_get_drvdata(dev); - mutex_lock(&tgfx->sem); + guard(mutex)(&tgfx->sem); + if (!--tgfx->used) { del_timer_sync(&tgfx->timer); parport_write_control(tgfx->pd->port, 0x00); parport_release(tgfx->pd); } - mutex_unlock(&tgfx->sem); } |