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[PATCH] pcmcia: use mutexes instead of semaphores

Selaa lähdekoodia 
Use mutexes in the PCMICA core, as they suffice for what needs to be done.
Includes a bugfix from and Signed-off-by Andrew Morton.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski
2006-01-10 21:20:36 +01:00
vanhempi cbbddd1046
commit 7fe908dd11
6 muutettua tiedostoa jossa 60 lisäystä ja 58 poistoa
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14
drivers/pcmcia/ds.c
Näytä tiedosto

@@ -564,7 +564,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
* won't work, this doesn't matter much at the moment: the driver core doesn't
* support it either.
*/
static DECLARE_MUTEX(device_add_lock);
static DEFINE_MUTEX(device_add_lock);
struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
{
@@ -576,7 +576,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
if (!s)
return NULL;
down(&device_add_lock);
mutex_lock(&device_add_lock);
/* max of 2 devices per card */
if (s->device_count == 2)
@@ -640,7 +640,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
if (device_register(&p_dev->dev))
goto err_unreg;
up(&device_add_lock);
mutex_unlock(&device_add_lock);
return p_dev;
@@ -654,7 +654,7 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
kfree(p_dev);
s->device_count--;
err_put:
up(&device_add_lock);
mutex_unlock(&device_add_lock);
pcmcia_put_socket(s);
return NULL;
@@ -713,7 +713,7 @@ static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
int no_devices=0;
unsigned long flags;
/* must be called with skt_sem held */
/* must be called with skt_mutex held */
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
if (list_empty(&skt->devices_list))
no_devices=1;
@@ -999,9 +999,9 @@ static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
if (!count)
return -EINVAL;
down(&p_dev->socket->skt_sem);
mutex_lock(&p_dev->socket->skt_mutex);
p_dev->allow_func_id_match = 1;
up(&p_dev->socket->skt_sem);
mutex_unlock(&p_dev->socket->skt_mutex);
bus_rescan_devices(&pcmcia_bus_type);