diff options
Diffstat (limited to 'drivers/hwmon/f71805f.c')
| -rw-r--r-- | drivers/hwmon/f71805f.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c index 73c681162653..623736d2a7c1 100644 --- a/drivers/hwmon/f71805f.c +++ b/drivers/hwmon/f71805f.c @@ -96,17 +96,23 @@ superio_select(int base, int ld) outb(ld, base + 1); } -static inline void +static inline int superio_enter(int base) { + if (!request_muxed_region(base, 2, DRVNAME)) + return -EBUSY; + outb(0x87, base); outb(0x87, base); + + return 0; } static inline void superio_exit(int base) { outb(0xaa, base); + release_region(base, 2); } /* @@ -1561,7 +1567,7 @@ exit: static int __init f71805f_find(int sioaddr, unsigned short *address, struct f71805f_sio_data *sio_data) { - int err = -ENODEV; + int err; u16 devid; static const char * const names[] = { @@ -1569,8 +1575,11 @@ static int __init f71805f_find(int sioaddr, unsigned short *address, "F71872F/FG or F71806F/FG", }; - superio_enter(sioaddr); + err = superio_enter(sioaddr); + if (err) + return err; + err = -ENODEV; devid = superio_inw(sioaddr, SIO_REG_MANID); if (devid != SIO_FINTEK_ID) goto exit; |