diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-11 15:55:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-20 14:49:55 -0800 |
| commit | 4186ecf8ad16dd05759a09594de6a87e48759ba6 (patch) | |
| tree | 3ee5292d9f4a36e3eb359b586289ec972bcbaf39 /drivers/usb/core/notify.c | |
| parent | 35cce732d9d4d9af6b4ad4d26d8f8c0eddb573a2 (diff) | |
| download | linux-4186ecf8ad16dd05759a09594de6a87e48759ba6.tar.bz2 | |
[PATCH] USB: convert a bunch of USB semaphores to mutexes
the patch below converts a bunch of semaphores-used-as-mutex in the USB
code to mutexes
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/notify.c')
| -rw-r--r-- | drivers/usb/core/notify.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c index fbbebab52fbd..4b55285de9a0 100644 --- a/drivers/usb/core/notify.c +++ b/drivers/usb/core/notify.c @@ -13,16 +13,17 @@ #include <linux/kernel.h> #include <linux/notifier.h> #include <linux/usb.h> +#include <linux/mutex.h> #include "usb.h" static struct notifier_block *usb_notifier_list; -static DECLARE_MUTEX(usb_notifier_lock); +static DEFINE_MUTEX(usb_notifier_lock); static void usb_notifier_chain_register(struct notifier_block **list, struct notifier_block *n) { - down(&usb_notifier_lock); + mutex_lock(&usb_notifier_lock); while (*list) { if (n->priority > (*list)->priority) break; @@ -30,13 +31,13 @@ static void usb_notifier_chain_register(struct notifier_block **list, } n->next = *list; *list = n; - up(&usb_notifier_lock); + mutex_unlock(&usb_notifier_lock); } static void usb_notifier_chain_unregister(struct notifier_block **nl, struct notifier_block *n) { - down(&usb_notifier_lock); + mutex_lock(&usb_notifier_lock); while ((*nl)!=NULL) { if ((*nl)==n) { *nl = n->next; @@ -45,7 +46,7 @@ static void usb_notifier_chain_unregister(struct notifier_block **nl, nl=&((*nl)->next); } exit: - up(&usb_notifier_lock); + mutex_unlock(&usb_notifier_lock); } static int usb_notifier_call_chain(struct notifier_block **n, @@ -54,7 +55,7 @@ static int usb_notifier_call_chain(struct notifier_block **n, int ret=NOTIFY_DONE; struct notifier_block *nb = *n; - down(&usb_notifier_lock); + mutex_lock(&usb_notifier_lock); while (nb) { ret = nb->notifier_call(nb,val,v); if (ret&NOTIFY_STOP_MASK) { @@ -63,7 +64,7 @@ static int usb_notifier_call_chain(struct notifier_block **n, nb = nb->next; } exit: - up(&usb_notifier_lock); + mutex_unlock(&usb_notifier_lock); return ret; } |