[WATCHDOG] iTCO_wdt: fix SMI_EN regression 2
bugzilla: #12363
commit 7cd5b08be3c489df11b559fef210b81133764ad4 added a second regression:
some Dell's and Compaq's lockup on boot. So we revert most of the code.
The ICH9 reboot issue remains in place and will need some more fixing... :-(
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index 5b395a4..3523349 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -1,7 +1,7 @@
/*
- * intel TCO Watchdog Driver (Used in i82801 and i6300ESB chipsets)
+ * intel TCO Watchdog Driver (Used in i82801 and i63xxESB chipsets)
*
- * (c) Copyright 2006-2008 Wim Van Sebroeck <wim@iguana.be>.
+ * (c) Copyright 2006-2009 Wim Van Sebroeck <wim@iguana.be>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -63,7 +63,7 @@
/* Module and version information */
#define DRV_NAME "iTCO_wdt"
-#define DRV_VERSION "1.04"
+#define DRV_VERSION "1.05"
#define PFX DRV_NAME ": "
/* Includes */
@@ -236,16 +236,16 @@
/* Address definitions for the TCO */
/* TCO base address */
-#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60
+#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60
/* SMI Control and Enable Register */
-#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30
+#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30
#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Curr. Value */
#define TCOv1_TMR TCOBASE + 0x01 /* TCOv1 Timer Initial Value */
-#define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */
-#define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */
-#define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
-#define TCO2_STS TCOBASE + 0x06 /* TCO2 Status Register */
+#define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */
+#define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */
+#define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
+#define TCO2_STS TCOBASE + 0x06 /* TCO2 Status Register */
#define TCO1_CNT TCOBASE + 0x08 /* TCO1 Control Register */
#define TCO2_CNT TCOBASE + 0x0a /* TCO2 Control Register */
#define TCOv2_TMR TCOBASE + 0x12 /* TCOv2 Timer Initial Value */
@@ -338,7 +338,6 @@
static int iTCO_wdt_start(void)
{
unsigned int val;
- unsigned long val32;
spin_lock(&iTCO_wdt_private.io_lock);
@@ -351,11 +350,6 @@
return -EIO;
}
- /* Bit 13: TCO_EN -> 0 = Disables TCO logic generating an SMI# */
- val32 = inl(SMI_EN);
- val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */
- outl(val32, SMI_EN);
-
/* Force the timer to its reload value by writing to the TCO_RLD
register */
if (iTCO_wdt_private.iTCO_version == 2)
@@ -378,7 +372,6 @@
static int iTCO_wdt_stop(void)
{
unsigned int val;
- unsigned long val32;
spin_lock(&iTCO_wdt_private.io_lock);
@@ -390,11 +383,6 @@
outw(val, TCO1_CNT);
val = inw(TCO1_CNT);
- /* Bit 13: TCO_EN -> 1 = Enables the TCO logic to generate SMI# */
- val32 = inl(SMI_EN);
- val32 |= 0x00002000;
- outl(val32, SMI_EN);
-
/* Set the NO_REBOOT bit to prevent later reboots, just for sure */
iTCO_wdt_set_NO_REBOOT_bit();
@@ -649,6 +637,7 @@
int ret;
u32 base_address;
unsigned long RCBA;
+ unsigned long val32;
/*
* Find the ACPI/PM base I/O address which is the base
@@ -695,6 +684,10 @@
ret = -EIO;
goto out;
}
+ /* Bit 13: TCO_EN -> 0 = Disables TCO logic generating an SMI# */
+ val32 = inl(SMI_EN);
+ val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */
+ outl(val32, SMI_EN);
/* The TCO I/O registers reside in a 32-byte range pointed to
by the TCOBASE value */