arm: omap1: nokia770 semaphore to mutex

The audio_pwr_sem conforms to the new mutex API. This patch converts
the semaphore to the new API along with all the locking locations.

I also changed the name to reflect the new type.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index e96d05e36bc12d3a746072dd2814f3d9eeff5492..08f533eced7583d30bb50cc02148894621a7a286 100644 (file)
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -18,6 +18,7 @@
 #include <linux/spi/ads7846.h>
 #include <linux/workqueue.h>
 #include <linux/delay.h>
+#include <linux/mutex.h>
 
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
@@ -244,7 +245,7 @@ static struct omap_board_config_kernel nokia770_config[] __initdata = {
 #define        AMPLIFIER_CTRL_GPIO     58
 
 static struct clk *dspxor_ck;
-static DECLARE_MUTEX(audio_pwr_sem);
+static DEFINE_MUTEX(audio_pwr_mutex);
 /*
  * audio_pwr_state
  * +--+-------------------------+---------------------------------------+
@@ -260,7 +261,7 @@ static DECLARE_MUTEX(audio_pwr_sem);
 static int audio_pwr_state = -1;
 
 /*
- * audio_pwr_up / down should be called under audio_pwr_sem
+ * audio_pwr_up / down should be called under audio_pwr_mutex
  */
 static void nokia770_audio_pwr_up(void)
 {
@@ -279,11 +280,11 @@ static void nokia770_audio_pwr_up(void)
 
 static void codec_delayed_power_down(struct work_struct *work)
 {
-       down(&audio_pwr_sem);
+       mutex_lock(&audio_pwr_mutex);
        if (audio_pwr_state == -1)
                aic23_power_down();
        clk_disable(dspxor_ck);
-       up(&audio_pwr_sem);
+       mutex_unlock(&audio_pwr_mutex);
 }
 
 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
@@ -300,19 +301,19 @@ static void nokia770_audio_pwr_down(void)
 static int
 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 {
-       down(&audio_pwr_sem);
+       mutex_lock(&audio_pwr_mutex);
        if (audio_pwr_state == -1)
                nokia770_audio_pwr_up();
        /* force audio_pwr_state = 0, even if it was 1. */
        audio_pwr_state = 0;
-       up(&audio_pwr_sem);
+       mutex_unlock(&audio_pwr_mutex);
        return 0;
 }
 
 static int
 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 {
-       down(&audio_pwr_sem);
+       mutex_lock(&audio_pwr_mutex);
        switch (stage) {
        case 1:
                if (audio_pwr_state == 0)
@@ -325,7 +326,7 @@ nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
                }
                break;
        }
-       up(&audio_pwr_sem);
+       mutex_unlock(&audio_pwr_mutex);
        return 0;
 }