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Commit 729d273a authored by Giel van Schijndel's avatar Giel van Schijndel Committed by Jean Delvare
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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: default avatarGiel van Schijndel <me@mortis.eu>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent bd328acd

drivers/hwmon/f71882fg.c

+8 −0
Original line number Diff line number Diff line
@@ -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;

}