[PATCH] I2C: Convert i2c to mutexes

The patch below converts a few i2c semaphores to mutexes

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
index 3eb47890db40..26cf891762b8 100644
--- a/drivers/i2c/busses/i2c-ali1535.c
+++ b/drivers/i2c/busses/i2c-ali1535.c
@@ -62,6 +62,7 @@
 #include <linux/ioport.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
 #include <asm/io.h>
 #include <asm/semaphore.h>
 
@@ -136,7 +137,7 @@
 
 static struct pci_driver ali1535_driver;
 static unsigned short ali1535_smba;
-static DECLARE_MUTEX(i2c_ali1535_sem);
+static DEFINE_MUTEX(i2c_ali1535_mutex);
 
 /* Detect whether a ALI1535 can be found, and initialize it, where necessary.
    Note the differences between kernels with the old PCI BIOS interface and
@@ -345,7 +346,7 @@ static s32 ali1535_access(struct i2c_adapter *adap, u16 addr,
         int timeout;
         s32 result = 0;
 
-        down(&i2c_ali1535_sem);
+        mutex_lock(&i2c_ali1535_mutex);
         /* make sure SMBus is idle */
         temp = inb_p(SMBHSTSTS);
         for (timeout = 0;
@@ -460,7 +461,7 @@ static s32 ali1535_access(struct i2c_adapter *adap, u16 addr,
                 break;
         }
 EXIT:
-        up(&i2c_ali1535_sem);
+        mutex_unlock(&i2c_ali1535_mutex);
         return result;
 }