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Message-Id: <20071203153743.119714913@mvista.com>
Date: Mon, 03 Dec 2007 07:37:43 -0800
From: Daniel Walker <dwalker@...sta.com>
To: akpm@...ux-foundation.org
Cc: jonathan@...masters.org
Subject: [PATCH] isapnp driver semaphore to mutex
Changed the isapnp semaphore to a mutex.
Signed-Off-By: Daniel Walker <dwalker@...sta.com>
---
drivers/pnp/interface.c | 11 ++++++-----
drivers/pnp/manager.c | 19 ++++++++++---------
2 files changed, 16 insertions(+), 14 deletions(-)
Index: linux-2.6.23/drivers/pnp/interface.c
===================================================================
--- linux-2.6.23.orig/drivers/pnp/interface.c
+++ linux-2.6.23/drivers/pnp/interface.c
@@ -13,6 +13,7 @@
#include <linux/stat.h>
#include <linux/ctype.h>
#include <linux/slab.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include "base.h"
@@ -315,7 +316,7 @@ static ssize_t pnp_show_current_resource
return ret;
}
-extern struct semaphore pnp_res_mutex;
+extern struct mutex pnp_res_mutex;
static ssize_t
pnp_set_current_resources(struct device *dmdev, struct device_attribute *attr,
@@ -361,10 +362,10 @@ pnp_set_current_resources(struct device
goto done;
}
if (!strnicmp(buf, "get", 3)) {
- down(&pnp_res_mutex);
+ mutex_lock(&pnp_res_mutex);
if (pnp_can_read(dev))
dev->protocol->get(dev, &dev->res);
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
goto done;
}
if (!strnicmp(buf, "set", 3)) {
@@ -373,7 +374,7 @@ pnp_set_current_resources(struct device
goto done;
buf += 3;
pnp_init_resource_table(&dev->res);
- down(&pnp_res_mutex);
+ mutex_lock(&pnp_res_mutex);
while (1) {
while (isspace(*buf))
++buf;
@@ -455,7 +456,7 @@ pnp_set_current_resources(struct device
}
break;
}
- up(&pnp_res_mutex);
+ mutex_unlock(&pnp_res_mutex);
goto done;
}
Index: linux-2.6.23/drivers/pnp/manager.c
===================================================================
--- linux-2.6.23.orig/drivers/pnp/manager.c
+++ linux-2.6.23/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 p
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 p
} 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
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
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;
}
@@ -547,9 +548,9 @@ 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;
}
--
--
--
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