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[PATCH] drivers/isdn/gigaset: reduce mutex scope 

Do not lock the cardstate structure mutex earlier than necessary.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tilman Schmidt 2007-02-12 00:52:24 -08:00 committed by Linus Torvalds
parent 163da958ba
commit 7435f50e12
2 changed files with 4 additions and 3 deletions
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4
drivers/isdn/gigaset/common.c
View File

@ -640,7 +640,6 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
return NULL;
}
mutex_init(&cs->mutex);
mutex_lock(&cs->mutex);
gig_dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1);
cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL);
@ -738,6 +737,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
++cs->cs_init;
/* set up character device */
gigaset_if_init(cs);
/* set up device sysfs */
@ -753,11 +753,9 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
add_timer(&cs->timer);
gig_dbg(DEBUG_INIT, "cs initialized");
mutex_unlock(&cs->mutex);
return cs;
error:
mutex_unlock(&cs->mutex);
gig_dbg(DEBUG_INIT, "failed");
gigaset_freecs(cs);
return NULL;

3
drivers/isdn/gigaset/interface.c
View File

@ -615,6 +615,8 @@ void gigaset_if_init(struct cardstate *cs)
return;
tasklet_init(&cs->if_wake_tasklet, &if_wake, (unsigned long) cs);
mutex_lock(&cs->mutex);
cs->tty_dev = tty_register_device(drv->tty, cs->minor_index, NULL);
if (!IS_ERR(cs->tty_dev))
@ -623,6 +625,7 @@ void gigaset_if_init(struct cardstate *cs)
warn("could not register device to the tty subsystem");
cs->tty_dev = NULL;
}
mutex_unlock(&cs->mutex);
}
void gigaset_if_free(struct cardstate *cs)