[ARM] Convert some arm semaphores to mutexes

The arm clock semaphores are strict mutexes, convert them to the new
mutex implementation

Signed-off-by: Arjan van de Ven <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

arch/arm/common/rtctime.c

···
 #include <linux/miscdevice.h>
 #include <linux/spinlock.h>
 #include <linux/device.h>
+#include <linux/mutex.h>
 
 #include <asm/rtc.h>
 #include <asm/semaphore.h>
···
 /*
  * rtc_sem protects rtc_inuse and rtc_ops
  */
-static DECLARE_MUTEX(rtc_sem);
+static DEFINE_MUTEX(rtc_mutex);
 static unsigned long rtc_inuse;
 static struct rtc_ops *rtc_ops;
 
···
 {
 	int ret;
 
-	down(&rtc_sem);
+	mutex_lock(&rtc_mutex);
 
 	if (rtc_inuse) {
 		ret = -EBUSY;
···
 			rtc_inuse = 1;
 		}
 	}
-	up(&rtc_sem);
+	mutex_unlock(&rtc_mutex);
 
 	return ret;
 }
···
 {
 	int ret = -EBUSY;
 
-	down(&rtc_sem);
+	mutex_lock(&rtc_mutex);
 	if (rtc_ops == NULL) {
 		rtc_ops = ops;
 
···
 			create_proc_read_entry("driver/rtc", 0, NULL,
 					       rtc_read_proc, ops);
 	}
-	up(&rtc_sem);
+	mutex_unlock(&rtc_mutex);
 
 	return ret;
 }
···
 
 void unregister_rtc(struct rtc_ops *rtc)
 {
-	down(&rtc_sem);
+	mutex_lock(&rtc_mutex);
 	if (rtc == rtc_ops) {
 		remove_proc_entry("driver/rtc", NULL);
 		misc_deregister(&rtc_miscdev);
 		rtc_ops = NULL;
 	}
-	up(&rtc_sem);
+	mutex_unlock(&rtc_mutex);
 }
 EXPORT_SYMBOL(unregister_rtc);

arch/arm/kernel/ecard.c

···
 #include <linux/proc_fs.h>
 #include <linux/device.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
 
 #include <asm/dma.h>
 #include <asm/ecard.h>
···
 
 static DECLARE_WAIT_QUEUE_HEAD(ecard_wait);
 static struct ecard_request *ecard_req;
-static DECLARE_MUTEX(ecard_sem);
+static DEFINE_MUTEX(ecard_mutex);
 
 /*
  * Set up the expansion card daemon's page tables.
···
 
 	req->complete = &completion;
 
-	down(&ecard_sem);
+	mutex_lock(&ecard_mutex);
 	ecard_req = req;
 	wake_up(&ecard_wait);
 
···
 	 * Now wait for kecardd to run.
 	 */
 	wait_for_completion(&completion);
-	up(&ecard_sem);
+	mutex_unlock(&ecard_mutex);
 }
 
 /* ======================= Mid-level card control ===================== */

arch/arm/mach-aaec2000/clock.c

···
 #include <linux/err.h>
 #include <linux/string.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/semaphore.h>
 
 #include "clock.h"
 
 static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
 	struct clk *p, *clk = ERR_PTR(-ENOENT);
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_for_each_entry(p, &clocks, node) {
 		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
 			clk = p;
 			break;
 		}
 	}
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return clk;
 }
···
 
 int clk_register(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_add(&clk->node, &clocks);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 	return 0;
 }
 EXPORT_SYMBOL(clk_register);
 
 void clk_unregister(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_del(&clk->node);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 }
 EXPORT_SYMBOL(clk_unregister);
 

arch/arm/mach-integrator/clock.c

···
 #include <linux/err.h>
 #include <linux/string.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/semaphore.h>
 #include <asm/hardware/icst525.h>
···
 #include "clock.h"
 
 static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
 	struct clk *p, *clk = ERR_PTR(-ENOENT);
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_for_each_entry(p, &clocks, node) {
 		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
 			clk = p;
 			break;
 		}
 	}
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return clk;
 }
···
 
 int clk_register(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_add(&clk->node, &clocks);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 	return 0;
 }
 EXPORT_SYMBOL(clk_register);
 
 void clk_unregister(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_del(&clk->node);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 }
 EXPORT_SYMBOL(clk_unregister);
 

arch/arm/mach-pxa/ssp.c

···
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/hardware.h>
···
 #endif
 };
 
-static DECLARE_MUTEX(sem);
+static DEFINE_MUTEX(mutex);
 static int use_count[PXA_SSP_PORTS] = {0, 0, 0};
 
 static irqreturn_t ssp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
···
 	if (port > PXA_SSP_PORTS || port == 0)
 		return -ENODEV;
 
-	down(&sem);
+	mutex_lock(&mutex);
 	if (use_count[port - 1]) {
-		up(&sem);
+		mutex_unlock(&mutex);
 		return -EBUSY;
 	}
 	use_count[port - 1]++;
 
 	if (!request_mem_region(__PREG(SSCR0_P(port)), 0x2c, "SSP")) {
 		use_count[port - 1]--;
-		up(&sem);
+		mutex_unlock(&mutex);
 		return -EBUSY;
 	}
 	dev->port = port;
···
 
 	/* turn on SSP port clock */
 	pxa_set_cken(ssp_info[port-1].clock, 1);
-	up(&sem);
+	mutex_unlock(&mutex);
 	return 0;
 
 out_region:
 	release_mem_region(__PREG(SSCR0_P(port)), 0x2c);
 	use_count[port - 1]--;
-	up(&sem);
+	mutex_unlock(&mutex);
 	return ret;
 }
 
···
  */
 void ssp_exit(struct ssp_dev *dev)
 {
-	down(&sem);
+	mutex_lock(&mutex);
 	SSCR0_P(dev->port) &= ~SSCR0_SSE;
 
     	if (dev->port > PXA_SSP_PORTS || dev->port == 0) {
···
 		free_irq(dev->irq, dev);
 	release_mem_region(__PREG(SSCR0_P(dev->port)), 0x2c);
 	use_count[dev->port - 1]--;
-	up(&sem);
+	mutex_unlock(&mutex);
 }
 
 EXPORT_SYMBOL(ssp_write_word);

arch/arm/mach-realview/clock.c

···
 #include <linux/errno.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/semaphore.h>
 #include <asm/hardware/icst307.h>
···
 #include "clock.h"
 
 static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
 	struct clk *p, *clk = ERR_PTR(-ENOENT);
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_for_each_entry(p, &clocks, node) {
 		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
 			clk = p;
 			break;
 		}
 	}
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return clk;
 }
···
 
 int clk_register(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_add(&clk->node, &clocks);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 	return 0;
 }
 EXPORT_SYMBOL(clk_register);
 
 void clk_unregister(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_del(&clk->node);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 }
 EXPORT_SYMBOL(clk_unregister);
 

arch/arm/mach-s3c2410/clock.c

···
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/hardware.h>
 #include <asm/atomic.h>
···
 /* clock information */
 
 static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 
 /* old functions */
 
···
 	else
 		idno = to_platform_device(dev)->id;
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 
 	list_for_each_entry(p, &clocks, list) {
 		if (p->id == idno &&
···
 		}
 	}
 
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 	return clk;
 }
 
···
 
 	/* add to the list of available clocks */
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_add(&clk->list, &clocks);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return 0;
 }

arch/arm/mach-versatile/clock.c

···
 #include <linux/err.h>
 #include <linux/string.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/semaphore.h>
 #include <asm/hardware/icst307.h>
···
 #include "clock.h"
 
 static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
 	struct clk *p, *clk = ERR_PTR(-ENOENT);
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_for_each_entry(p, &clocks, node) {
 		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
 			clk = p;
 			break;
 		}
 	}
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return clk;
 }
···
 
 int clk_register(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_add(&clk->node, &clocks);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 	return 0;
 }
 EXPORT_SYMBOL(clk_register);
 
 void clk_unregister(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_del(&clk->node);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 }
 EXPORT_SYMBOL(clk_unregister);
 

arch/arm/plat-omap/clock.c

···
 #include <linux/err.h>
 #include <linux/string.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/io.h>
 #include <asm/semaphore.h>
···
 #include <asm/arch/clock.h>
 
 LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 DEFINE_SPINLOCK(clockfw_lock);
 
 static struct clk_functions *arch_clock;
···
 {
 	struct clk *p, *clk = ERR_PTR(-ENOENT);
 
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_for_each_entry(p, &clocks, node) {
 		if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
 			clk = p;
 			break;
 		}
 	}
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return clk;
 }
···
 
 int clk_register(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_add(&clk->node, &clocks);
 	if (clk->init)
 		clk->init(clk);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 
 	return 0;
 }
···
 
 void clk_unregister(struct clk *clk)
 {
-	down(&clocks_sem);
+	mutex_lock(&clocks_mutex);
 	list_del(&clk->node);
-	up(&clocks_sem);
+	mutex_unlock(&clocks_mutex);
 }
 EXPORT_SYMBOL(clk_unregister);