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path: root/drivers/pnp/manager.c
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Diffstat (limited to 'drivers/pnp/manager.c')
-rw-r--r--drivers/pnp/manager.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c
index c6b3d4e..c28caf2 100644
--- a/drivers/pnp/manager.c
+++ b/drivers/pnp/manager.c
@@ -12,9 +12,10 @@
#include <linux/pnp.h>
#include <linux/slab.h>
#include <linux/bitmap.h>
+#include <linux/mutex.h>
#include "base.h"
-DECLARE_MUTEX(pnp_res_mutex);
+DEFINE_MUTEX(pnp_res_mutex);
static int pnp_assign_port(struct pnp_dev *dev, struct pnp_port *rule, int idx)
{
@@ -297,7 +298,7 @@ static int pnp_assign_resources(struct pnp_dev *dev, int depnum)
if (!pnp_can_configure(dev))
return -ENODEV;
- down(&pnp_res_mutex);
+ mutex_lock(&pnp_res_mutex);
pnp_clean_resource_table(&dev->res); /* start with a fresh slate */
if (dev->independent) {
port = dev->independent->port;
@@ -366,12 +367,12 @@ static int pnp_assign_resources(struct pnp_dev *dev, int depnum)
} else if (dev->dependent)
goto fail;
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
return 1;
fail:
pnp_clean_resource_table(&dev->res);
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
return 0;
}
@@ -396,7 +397,7 @@ int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res,
return -ENOMEM;
*bak = dev->res;
- down(&pnp_res_mutex);
+ mutex_lock(&pnp_res_mutex);
dev->res = *res;
if (!(mode & PNP_CONFIG_FORCE)) {
for (i = 0; i < PNP_MAX_PORT; i++) {
@@ -416,14 +417,14 @@ int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res,
goto fail;
}
}
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
kfree(bak);
return 0;
fail:
dev->res = *bak;
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
kfree(bak);
return -EINVAL;
}
@@ -513,7 +514,7 @@ int pnp_activate_dev(struct pnp_dev *dev)
int error;
if (dev->active)
- return 0; /* the device is already active */
+ return 0;
/* ensure resources are allocated */
if (pnp_auto_config_dev(dev))
@@ -524,7 +525,7 @@ int pnp_activate_dev(struct pnp_dev *dev)
return error;
dev->active = 1;
- return 1;
+ return 0;
}
/**
@@ -538,7 +539,7 @@ int pnp_disable_dev(struct pnp_dev *dev)
int error;
if (!dev->active)
- return 0; /* the device is already disabled */
+ return 0;
error = pnp_stop_dev(dev);
if (error)
@@ -547,11 +548,11 @@ int pnp_disable_dev(struct pnp_dev *dev)
dev->active = 0;
/* release the resources so that other devices can use them */
- down(&pnp_res_mutex);
+ mutex_lock(&pnp_res_mutex);
pnp_clean_resource_table(&dev->res);
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
- return 1;
+ return 0;
}
/**