On Wed, 24 Mar 2010 10:34:37 +0100, Giel van Schijndel wrote:
> hwmon: f71882fg: acquire I/O regions while we're working with them
>
> Acquire the I/O region for the Super I/O chip while we're working on it.
>
> Signed-off-by: Giel van Schijndel <me@xxxxxxxxx>
> ---
> drivers/hwmon/f71882fg.c | 8 ++++++++
> 1 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
> index ca34e5c..537841e 100644
> --- a/drivers/hwmon/f71882fg.c
> +++ b/drivers/hwmon/f71882fg.c
> @@ -2178,6 +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);
> @@ -2232,6 +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;
> }
>
Applied, thanks.
--
Jean Delvare
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