Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
index 73c6811..67b47de 100644
--- a/drivers/hwmon/f71805f.c
+++ b/drivers/hwmon/f71805f.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* f71805f.c - driver for the Fintek F71805F/FG and F71872F/FG Super-I/O
* chips integrated hardware monitoring features
@@ -12,20 +13,6 @@
*
* The F71806F/FG is essentially the same as the F71872F/FG. It even has
* the same chip ID, so the driver can't differentiate between.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -96,17 +83,23 @@
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 +1554,7 @@
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 +1562,11 @@
"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;