Add a watchdog driver for the hardware watchdog timer on the
SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset.
Tested-by: NMarco Chiappero <marco@absence.it>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add the timeout module parameter to ib700wdt.c
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

See description of commit:

   [ARM] rtc-sa1100: don't assume CLOCK_TICK_RATE to be a constant

for additional information.
Signed-off-by: NEric Miao <eric.miao@marvell.com>

The code used '&= 0x00002000' when it tried to set the TCO_EN bit, which
obviously didn't set that bit at all, but instead just reset all the
other bits in the SMI_EN register.

This bug seemingly caused various random behavior, with Frans Pop
reporting that X.org just silently hung at startup and Rafael Wysocki
reports the fan spinning with full speed.

See
	http://lkml.org/lkml/2008/12/3/178
	http://bugzilla.kernel.org/show_bug.cgi?id=12162

The problem seems to have been triggered by "[WATCHDOG] iTCO_wdt :
problem with rebooting on new ICH9 based motherboards" (commit
7cd5b08b), but the bogus code existed
before that too (in the "supermicro_old_pre_stop()" function), it just
apparently never showed up due to different logic.

In that commit the broken code got moved around and now gets executed
much more.
Reported-by: NRafael J. Wysocki <rjw@sisk.pl>
Tested-by: NFrans Pop <elendil@planet.nl>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

When the "hpwdt" module is loaded (even if the /dev/watchdog device is not
opened), then kdump does not work. The panic kernel either does not start at
all or crash in various places.

The problem is that hpwdt_pretimeout is registered with register_die_notifier()
with the highest possible priority. Because it returns NOTIFY_STOP, the
crash_nmi_callback which is also registered with register_die_notifier()
is never executed. This causes the shutdown of other CPUs to fail.

Reverting the order is no option: The crash_nmi_callback executes HLT
and so never returns normally. Because of that, it must be executed as
last notifier, which currently is done.

So, that patch returns NOTIFY_OK to keep the crash_nmi_callback executed.
Signed-off-by: NBernhard Walle <bwalle@suse.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NThomas Mingarelli <thomas.mingarelli@hp.com>
Cc: Vivek Goyal <vgoyal@redhat.com>

... and fix those drivers that were incorrectly relying upon
that include.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The address provided by the SMBIOS/DMI CRU information is mapped via
ioremap() in the virtual address space.  However, since the address is
executed (i.e.  call'd), we need to set that pages as executable.

Without that, I get following oops on a HP ProLiant DL385 G2
machine with BIOS from 05/29/2008 when I trigger crashdump:

    BUG: unable to handle kernel paging request at ffffc20011090c00
    IP: [<ffffc20011090c00>] 0xffffc20011090c00
    PGD 12f813067 PUD 7fe6a067 PMD 7effe067 PTE 80000000fffd3173
    Oops: 0011 [1] SMP
    last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
    CPU 1
    Modules linked in: autofs4 ipv6 af_packet cpufreq_conservative cpufreq_userspace
     cpufreq_powersave powernow_k8 fuse loop dm_mod rtc_cmos ipmi_si sg rtc_core i2c
    _piix4 ipmi_msghandler bnx2 sr_mod container button i2c_core hpilo joydev pcspkr
     rtc_lib shpchp hpwdt cdrom pci_hotplug usbhid hid ff_memless ohci_hcd ehci_hcd
    uhci_hcd usbcore edd ext3 mbcache jbd fan ide_pci_generic serverworks ide_core p
    ata_serverworks pata_acpi cciss ata_generic libata scsi_mod dock thermal process
    or thermal_sys hwmon
    Supported: Yes
    Pid: 0, comm: swapper Not tainted 2.6.27.5-HEAD_20081111100657-default #1
    RIP: 0010:[<ffffc20011090c00>]  [<ffffc20011090c00>] 0xffffc20011090c00
    RSP: 0018:ffff88012f6f9e68  EFLAGS: 00010046
    RAX: 0000000000000d02 RBX: 0000000000000000 RCX: 0000000000000000
    RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
    RBP: ffff88012f6f9e98 R08: 666666666666660a R09: ffffffffa1006fc0
    R10: 0000000000000000 R11: ffff88012f6f3ea8 R12: ffffc20011090c00
    R13: ffff88012f6f9ee8 R14: 000000000000000e R15: 0000000000000000
    FS:  00007ff70b29a6f0(0000) GS:ffff88012f6512c0(0000) knlGS:0000000000000000
    CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    CR2: ffffc20011090c00 CR3: 0000000000201000 CR4: 00000000000006e0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process swapper (pid: 0, threadinfo ffff88012f6f2000, task ffff88007fa8a1c0)
    Stack:  ffffffffa0f8502b 0000000000000002 ffffffff80738d50 0000000000000000
     0000000000000046 0000000000000046 00000000fffffffe ffffffffa0f852ec
     0000000000000000 ffffffff804ad9a6 0000000000000000 0000000000000000
    Call Trace:
    Inexact backtrace:

     <NMI>  [<ffffffffa0f8502b>] ? asminline_call+0x2b/0x55 [hpwdt]
     [<ffffffffa0f852ec>] hpwdt_pretimeout+0x3c/0xa0 [hpwdt]
     [<ffffffff804ad9a6>] ? notifier_call_chain+0x29/0x4c
     [<ffffffff802587e4>] ? notify_die+0x2d/0x32
     [<ffffffff804abbdc>] ? default_do_nmi+0x53/0x1d9
     [<ffffffff804abd90>] ? do_nmi+0x2e/0x43
     [<ffffffff804ab552>] ? nmi+0xa2/0xd0
     [<ffffffff80221ef9>] ? native_safe_halt+0x2/0x3
     <<EOE>>  [<ffffffff8021345d>] ? default_idle+0x38/0x54
     [<ffffffff8021359a>] ? c1e_idle+0x118/0x11c
     [<ffffffff8020b3b5>] ? cpu_idle+0xa9/0xf1

    Code: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff <55> 50 e8 00 00 00 00 58 48 2d 07 10 40 00 48 8b e8 58 e9 68 02
    RIP  [<ffffc20011090c00>] 0xffffc20011090c00
     RSP <ffff88012f6f9e68>
    CR2: ffffc20011090c00
    Kernel panic - not syncing: Fatal exception
Signed-off-by: NBernhard Walle <bwalle@suse.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: N"H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: NThomas Mingarelli <Thomas.Mingarelli@hp.com>
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Add support for the following I/O controller hubs:
ICH7DH, ICH9M, ICH9M-E, ICH10, ICH10R, ICH10D and ICH10DO.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The iTCO_wdt code was not clearing the correct bits.
It now clears the timeout status bit and then the
SECOND_TO_STS bit and then the BOOT_STS bit.
Note: we should first clear the SECOND_TO_STS bit
before clearing the BOOT_STS bit.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Bugzilla #9868: On Intel motherboards with the ICH9 based I/O controllers
(Like DP35DP and DG33FB) the iTCO timer counts but it doesn't reboot the
system after the counter expires.

This patch fixes this by moving the enabling & disabling of the TCO_EN bit
in the SMI_EN register into the start and stop code.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Using spin_lock_irqsave with a local variable called flags without
declaring is a bad idea, fix this by declaring it.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch fixes the setting of the Book-E watchdog timer interval setup
on initialization and by ioctl().

On initialization the period bits have to be masked before setting
a new period.

In WDIOC_SETTIMEOUT ioctl we have to use the correct mask.
Signed-off-by: NMatthias Fuchs <matthias.fuchs@esd-electronics.com>
Acked-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

The architecture header files were recently moved from
include/asm-arm/mach-at91/ to arch/arm/mach-at91/include/mach/.  The SAM9
watchdog driver still includes a header from the old location.
Signed-off-by: NAndrew Victor <linux@maxim.org.za>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The SAM9 watchdog driver is usable on the whole family of AT91SAM9 and
CAP9 processors.
Update the configuration to indicate this and allow the driver to be selected.
Signed-off-by: NAndrew Victor <linux@maxim.org.za>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

The architecture header files were recently moved from
include/asm-arm/mach-at91/ to arch/arm/mach-at91/include/mach/.
The SAM9 watchdog driver still includes a header from the old location.
Signed-off-by: NAndrew Victor <linux@maxim.org.za>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Move  regs-watchdog.h to arch/arm/plat-s3c/include/plat ready
to clean out the old include directories
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Use the newly introduced pci_ioremap_bar() function in drivers/watchdog.
pci_ioremap_bar() just takes a pci device and a bar number, with the goal
of making it really hard to get wrong, while also having a central place
to stick sanity checks.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This seems to have popped up after the recent merges:

drivers/watchdog/w83697ug_wdt.c: In function ‘w83697ug_select_wd_register’:
drivers/watchdog/w83697ug_wdt.c:105: warning: ‘return’ with a value, in function returning void
Signed-off-by: NAlan Cox <alan@redhat.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This fixes Bug 11399:
if ibwdt_set_heartbeat(int t) is called with value 30 then
the check "if ((t < 0) || (t > 30))" in ibwdt_set_heartbeat
is not going to fail because t == 30, but in the loop, the
check wd_times[i] > t is never going to be true because
none of the wd_times are greater than the value of t (i.e. 30).
So we are exiting the loop with i == -1 and therefore setting
wd_margin to -1 which is wrong.
Reported-by: NZvonimir Rakamaric <zrakamar@cs.ubc.ca>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add spin_locking to orion5x_wdt.c to prevent races.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch allows the use of the hardware watchdog in the
Marvell Orion series of ARM SoCs.
Signed-off-by: NSylver Bruneau <sylver.bruneau@googlemail.com>
Signed-off-by: NLennert Buytenhek <buytenh@marvell.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Trivial cleanup patch.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

convert to use ioremap() and __raw_{read/write} friends.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGeorge G. Davis <gdavis@mvista.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

These are changes that have been sitting in linux-omap
and were never sent upstream.

Hopefully, it'll never happen again at least for this
driver.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add a driver for the watchdog timer embedded into AT91SAM9X chips.
Signed-off-by: NRenaud Cerrato <r.cerrato@til-technologies.fr>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Adapted the w83627hf_wdt.c driver to work with the w83697ug/uf chip, 
found on MSI Fuzzy CX700 boards.

The method used is taken directly from the winbond datasheet and 
surprisingly it differs slightly from all the other winbond watchdogs.

So far it has only been tested on the CX700 board that I have, but it 
seems to work nicely.
Signed-off-by: NFlemming Frandsen <ff@nrvissing.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add it87xx watchdog driver
IT8716 IT8718 IT8726 IT8712-J IT8712-K
Signed-off-by: NOliver Schuster <olivers137@aol.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

__asr_toggle() is always called with asr_lock held.
But there is unnecessary spin_unlock() call in __asr_toggle().
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Acked-by: NAndrey Panin <pazke@donpac.ru>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix some drivers so that they use the unlocked_ioctl call.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The wdt285.c watchdog driver is producing a number of
sparse errors due to missing __user attributes to calls
to put_user and copy_to_user, as well as in the prototype
of watchdog_write.

wdt285.c:144:21: warning: incorrect type in argument 1 (different address spaces)
wdt285.c:144:21:    expected void [noderef] <asn:1>*to
wdt285.c:144:21:    got void *<noident>
wdt285.c:150:9: warning: incorrect type in initializer (different address spaces)
wdt285.c:150:9:    expected int const [noderef] <asn:1>*register __p
wdt285.c:150:9:    got int *<noident>
wdt285.c:159:9: warning: incorrect type in initializer (different address spaces)
wdt285.c:159:9:    expected int const [noderef] <asn:1>*register __p
wdt285.c:159:9:    got int *<noident>
wdt285.c:174:9: warning: incorrect type in initializer (different address spaces)
wdt285.c:174:9:    expected int const [noderef] <asn:1>*register __p
wdt285.c:174:9:    got int *<noident>
wdt285.c:183:12: warning: incorrect type in initializer (incompatible argument 2 (different address spaces))
wdt285.c:183:12:    expected int ( *write )( ... )
wdt285.c:183:12:    got int ( static [toplevel] *<noident> )( ... )
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

__asr_toggle() is always called with asr_lock held.
But there is unnecessary spin_unlock() call in __asr_toggle().
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Acked-by: NAndrey Panin <pazke@donpac.ru>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Add asm/cputype.h, moving functions and definitions from asm/system.h
there.  Convert all users of 'processor_id' to the more efficient
read_cpuid_id() function.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

As suggested by Stephen Rothwell.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Driver messages should print the driver name, rather than the
OF device node name.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The config stuff was already in drivers/watchdog/Kconfig
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The drivers below do not use LINUX_VERSION_CODE nor KERNEL_VERSION.
  drivers/watchdog/pc87413_wdt.c

This patch removes the said #include <version.h>.
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Signed-off-by: NIlpo Jarvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Fix the following build error when mpc8xxx_wdt is selected to build as a
module:

drivers/watchdog/mpc8xxx_wdt.c:304: error: redefinition of '__inittest'
drivers/watchdog/mpc8xxx_wdt.c:298: error: previous definition of '__inittest' was here
drivers/watchdog/mpc8xxx_wdt.c:304: error: redefinition of 'init_module'
drivers/watchdog/mpc8xxx_wdt.c:298: error: previous definition of 'init_module' was here
Reported-by: NDave Jones <davej@redhat.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Adrian Bunk <bunk@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>