Return ENOTTY instead of ENOIOCTLCMD in user-visible ioctl() results

The watchdog drivers used to return ENOIOCTLCMD for bad ioctl() commands.
ENOIOCTLCMD should not be visible by the user, so use ENOTTY instead.
Signed-off-by: NSamuel Tardieu <sam@rfc1149.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Acked-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

If the driver is not configured for `no way out`,
then the open method should not automatically allow
the setting of allow_close to CLOSE_STATE_ALLOW.

The setting of allow_close nullifies the use of
the magic close via the write path. It means that
in the default state, the watchdog will shut-down
even if the magic close has not been issued.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Added cpu_relax as suggested by Alan Cox.
Signed-off-by: NVitaly Wool <vitalywool@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add io spinlocks to prevent possible race
conditions between start and stop operations
that are issued from different child processes
where the master process opened /dev/watchdog.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Change remove code so that we first detach
the driver from userspace, then clean up the
clock and then clean up the memory we allocated.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Change nowayout to: WATCHDOG_NOWAYOUT as defined
in include/linux/watchdog.h .
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add watchdog support for Philips PNX4008 ARM board inlined.
Signed-off-by: NVitaly Wool <vitalywool@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Use refcounting for pci device obtaining.
Use PCI_DEVICE macro.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Andrew Morton <akpm@osdl.org>

Convert pci_find_device to pci_get_device + pci_dev_put
in alim watchdog cards' drivers (refcounting).
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

Add Texas Instruments (TI) OMAP1/2 (http://www.ti.com/omap) based
processors, like OMAP1610/1710/242x.

[akpm@osdl.org: cleanups]
Cc: <gdavis@mvista.com>
Cc: "Komal Shah" <komal_shah802003@yahoo.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

In some applications people have expressed a need for an mmap() method,
so we implement a simple stub for this that maps back a page with the
counter in it.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We had quite a bit of whitespace damage, clean most of it up..
Signed-off-by: NStuart Menefy <stuart.menefy@st.com>
Signed-off-by: NArthur Othieno <a.othieno@bluewin.ch>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The last argument of module_param is permissions, not default value.
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Three typos in drivers/char/watchdog/Kconfig...
Signed-off-by: NMatt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

Converted to a platform driver.
Added suspend/resume support - the watchdog is disabled during the
sleep states.

Original patch from David Brownell.
Signed-off-by: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

Some watchdog drivers have the ability to report the remaining time
before the system will reboot. With the WDIOC_GETTIMELEFT ioctl
you can now read the time left before the watchdog would reboot
your system.

The following drivers support this new IOCTL:
i8xx_tco.c, pcwd_pci.c and pcwd_usb.c .
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

If the s3c2410 watchdog timer is not enabled by
the driver at startup, ensure that it is stopped
in-case the boot process has enabled it.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

Temporary remove support for ICH6 + ICH7. In these newer TCO's
the watchdog timer has changed: the TCO_TMR register is not at
the TCOBASE+0x1 offset, but changed it's place to TCOBASE+0x12
and became 10 bit long [0:9]. (Kernel BUG 6031).

ICH6 + ICH7 support will be added in a new driver. Code is
under test.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

Fix printk output.

sc1200wdt: build 20020303<3>sc1200wdt: io parameter must be specified
Signed-off-by: NDave Jones <davej@redhat.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

Watchdog driver for the Atmel AT91RM9200 processor.
Signed-off-by: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

The Coverity checker noted that this resulted in a NULL pointer
reference if we were coming from

        if (usb_pcwd == NULL) {
                printk(KERN_ERR PFX "Out of memory\n");
                    goto error;
        }
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

change sprintf(pcwd_private.fw_ver_str, "ERROR");
to strcpy... as pointed out by Andrew Morton.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>

removal of includes (since we don't use kmalloc and
TASK_INTERRUPTABLE anymore).
Addition of missing commands.
Printk that lets the user know when the module was
unloaded.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add debugging info for the pcwd.c module.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

static void pcwd_cleanup_module doesn't need a return;
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Get the firmware version into the private data struct
of the ISA-PC watchdog card.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Clean-up the control status code (insert tabs where relevant),
Add new Control Status defines, Make sure that the R2DS bit
stays the same.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add a driver for the on-chip watchdog on the cirrus ep93xx series of ARM
CPUs.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: NAlessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

mv64x600_wdt: convert to the new platform device interface Do not use
platform_device_register_simple() as it is going away.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

platform_get_irq*() now returns on -ENXIO when the resource cannot be
found.  Ensure all users of platform_get_irq*() handle this error
appropriately.
Signed-off-by: NDavid Vrabel <dvrabel@arcom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Update the module version defines.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Put all code for showing the card's boot info in
one sub-routine.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Rename get_support function to pcwd_check_temperature_support
so that it is clearer what the function does.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add Control Status #2 bits (with defines)
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

more private data of the card to one struct.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

When doing a __devexit from a card we should also
decrement the cards_found counter.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>