[PATCH] I2C: i2c-ali1535: Drop redundant mutex

Drop a redundant mutex in driver i2c-ali1535. The struct i2c_adapter
includes a mutex for the same purpose, operated by i2c-core.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
index 115a731..d3ef46a 100644 (file)
--- a/drivers/i2c/busses/i2c-ali1535.c
+++ b/drivers/i2c/busses/i2c-ali1535.c
@@ -62,7 +62,6 @@
 #include <linux/ioport.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
-#include <linux/mutex.h>
 #include <asm/io.h>
 
 
@@ -136,7 +135,6 @@
 
 static struct pci_driver ali1535_driver;
 static unsigned short ali1535_smba;
-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 +343,6 @@ static s32 ali1535_access(struct i2c_adapter *adap, u16 addr,
        int timeout;
        s32 result = 0;
 
-       mutex_lock(&i2c_ali1535_mutex);
        /* make sure SMBus is idle */
        temp = inb_p(SMBHSTSTS);
        for (timeout = 0;
@@ -460,7 +457,6 @@ static s32 ali1535_access(struct i2c_adapter *adap, u16 addr,
                break;
        }
 EXIT:
-       mutex_unlock(&i2c_ali1535_mutex);
        return result;
 }