Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...

[pandora-kernel.git] / drivers / hwmon / f71882fg.c

diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index 4230729..537841e 100644 (file)
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -856,10 +856,8 @@ static inline int superio_inb(int base, int reg)
 static int superio_inw(int base, int reg)
 {
        int val;
-       outb(reg++, base);
-       val = inb(base + 1) << 8;
-       outb(reg, base);
-       val |= inb(base + 1);
+       val  = superio_inb(base, reg) << 8;
+       val |= superio_inb(base, reg + 1);
        return val;
 }
 
@@ -905,10 +903,8 @@ static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg)
 {
        u16 val;
 
-       outb(reg++, data->addr + ADDR_REG_OFFSET);
-       val = inb(data->addr + DATA_REG_OFFSET) << 8;
-       outb(reg, data->addr + ADDR_REG_OFFSET);
-       val |= inb(data->addr + DATA_REG_OFFSET);
+       val  = f71882fg_read8(data, reg) << 8;
+       val |= f71882fg_read8(data, reg + 1);
 
        return val;
 }
@@ -921,10 +917,8 @@ static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val)
 
 static void f71882fg_write16(struct f71882fg_data *data, u8 reg, u16 val)
 {
-       outb(reg++, data->addr + ADDR_REG_OFFSET);
-       outb(val >> 8, data->addr + DATA_REG_OFFSET);
-       outb(reg, data->addr + ADDR_REG_OFFSET);
-       outb(val & 255, data->addr + DATA_REG_OFFSET);
+       f71882fg_write8(data, reg,     val >> 8);
+       f71882fg_write8(data, reg + 1, val & 0xff);
 }
 
 static u16 f71882fg_read_temp(struct f71882fg_data *data, int nr)
@@ -2184,6 +2178,13 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
        int err = -ENODEV;
        u16 devid;
 
+       /* Don't step on other drivers' I/O space by accident */
+       if (!request_region(sioaddr, 2, DRVNAME)) {
+               printk(KERN_ERR DRVNAME ": I/O address 0x%04x already in use\n",
+                               (int)sioaddr);
+               return -EBUSY;
+       }
+
        superio_enter(sioaddr);
 
        devid = superio_inw(sioaddr, SIO_REG_MANID);
@@ -2238,6 +2239,7 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
                (int)superio_inb(sioaddr, SIO_REG_DEVREV));
 exit:
        superio_exit(sioaddr);
+       release_region(sioaddr, 2);
        return err;
 }