Convert superio_init to use PCI_FIXUP_FINAL as ohci_pci being called
before superio_probe really makes a mess. superio_init will then fail
to register irq 20 (the "SuperIO" irq) and BUG() because ohci_pci has
stolen it before superio_fixup_irq can be moved USB to irq 1.
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Since taking a spinlock disables preempt, and we need to spinlock tlb flush
on SMP for N class, we might as well just spinlock on uniprocessor machines
too.
Signed-off-by: NMatthew Wilcox <willy@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Remove unused variable "struct siginfo si" in signal.c
Signed-off-by: NGrant Grundler <grundler@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Remove drm compat_ioctl handlers. The drm drivers have proper
compat_ioctl methods these days.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NMatthew Wilcox <willy@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Move PA perf driver over to ->compat_ioctl.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NRandolph Chung <tausq@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

This commit is in response to a bug reported by Vesa on the irc channel
a couple of weeks ago.

The bug was that the console would apparently hang (not return) while
using the mux console.

The root cause of this bug is that bash (with readline support) makes a
call to the tcsetattr() glibc function with the argument TCSADRAIN.  This
causes the serial core in the kernel use the uart_wait_until_sent() to be
called. This function verifies the mux transmit queue is empty or calls the
msleep_interruptable() with a calculated timeout value that is dependant
upon the port->timeout variable.

The real problem here is that the port->timeout was not defined so it
was defaulted to 0 and the timeout calculation performs the following
calculation:

char_time = (port->timeout - HZ/50) / port->fifosize;

where char_time is an unsigned long. Since the serial Mux does not use
interrupts, the msleep_interruptable() function waits until the timeout
has been reached ... and when the port->timeout < HZ/50 this timeout will
be a long time. (I have validated that the console will eventually
return ... but it takes quite a while for this to happen).

This patch simply sets the port->timeout on the Mux to HZ/50 to avoid
this long timeout period.
Signed-off-by: NRyan Bradetich <rbrad@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Fix some compile problems:
- ret wasn't being initialised in all code paths
- I'm pretty sure 'goto out' should have been 'goto out_tsk'
Signed-off-by: NMatthew Wilcox <willy@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

This patch does the following:
* Fixes compiler warnings.
* Replaces a __raw_readl call with the existing macro.
Signed-off-by: NRyan Bradetich <rbrad@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

We actually have two separate bad bugs

1. The read_lock implementation spins with disabled interrupts.  This is
completely wrong
2. Our spin_lock_irqsave should check to see if interrupts were enabled
before the call and re-enable interrupts around the inner spin loop.

The problem is that if we spin with interrupts off, we can't receive
IPIs. This has resulted in a bug where SMP machines suddenly spit
smp_call_function timeout messages and hang.

The scenario I've caught is

CPU0 does a flush_tlb_all holding the vmlist_lock for write.
CPU1 tries a cat of /proc/meminfo which tries to acquire vmlist_lock for
     read
CPU1 is now spinning with interrupts disabled
CPU0 tries to execute a smp_call_function to flush the local tlb caches

This is now a deadlock because CPU1 is spinning with interrupts disabled
and can never receive the IPI
Signed-off-by: NJames Bottomley <jejb@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Improve the error message when we get a clashing mod path, and
actually display the IODC data and path for the conflicting device.
Signed-off-by: NMatthew Wilcox <willy@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Return PDC_OK when device registration fails so that we enumerate all
subsequent devices, even when we get two devices with the same hardware
path (which should never happen, but does with at least one revision of
rp8400 firmware).
Signed-off-by: NMatthew Wilcox <willy@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Document clobbers and args in entry.S and syscall.S.

entry.S: Add comment to indicate that cr27 may recycle and EDEADLOCK
detection is not 100% correct. Since this is only enabled when using
ENABLE_LWS_DEBUG, the user is warned by the comment.
Signed-off-by: NCarlos O'Donell <carlos@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Make the "redirecting irq" message to not display on the console by
setting the severity to KERN_DEBUG.  The console was basically unusable.
Signed-off-by: NRyan Bradetich <rbrad@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

irq_affinityp[] only available for SMP builds, make code that uses
it conditional on CONFIG_SMP.
Signed-off-by: NGrant Grundler <grundler@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

This really only adds them for the machines I can check SMP on, which
is CPU interrupts and IOSAPIC (so not any of the GSC based machines).

With this patch, irqbalanced can be used to maintain irq balancing.
Unfortunately, irqbalanced is a bit x86 centric, so it doesn't do an
incredibly good job, but it does work.
Signed-off-by: NJames Bottomley <jejb@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Since irq.c uses smp_send_all_nop, we must define it for UP builds
as well. Make it a static inline so it gets optimized away. This forces
irq.c to include <asm/smp.h> though.
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Fix our interrupts not to use smp_call_function

On K and D class smp, the generic code calls this under an irq
spinlock, which causes the WARN_ON() message in smp_call_function()
(and is also illegal because it could deadlock).

The fix is to use a new scheme based on the IPI_NOP.
Signed-off-by: NJames Bottomley <jejb@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Disable nesting of interrupts - still has holes

The offending sequence starts out like this:
1) take external interrupt
2) set_eiem() to only allow TIMER_IRQ; local interrupts still disabled
3) read the EIRR to get a "list" of pending interrupts
4) clear EIRR of pending interrupts we intend to handle
5) call __do_IRQ() to handle IRQ.
6) handle_IRQ_event() enables local interrupts (I-Bit)
7) take a timer interrupt
8) read EIRR to get a new list of pending interrupts
9) clear EIRR of pending interrupts we just read
10) handle pending interrupts found in (8)
11) set_eiem(cpu_eiem) and return
        [ TROUBLE! all enabled CPU IRQs are unmasked. }
12) handle remaining interrupts pending from (3)
        e.g. call __do_IRQ() -> handle_IRQ_event()..etc
        [ TROUBLE! call to handle_IRQ_event() can now enable *any* IRQ. }
13) set_eiem(cpu_eiem) and return

The problem is we now get into ugly race conditions with Timer and IPI
interrupts at this point.  I'm not exactly sure what happens when
things go wrong (perhaps nest calls to IPI or timer interrupt?).
But I'm certain it's not good.

This sequence will break sooner if (10) would accidentally leave
interrupts enabled.

I'm pretty sure the right answer is now to make cpu_eiem
a per CPU variable since all external interrupts on parisc
are per CPU. This means we will NOT need to send an IPI to
every CPU in the system when enabling or disabling an IRQ
since only one CPU needs to change it's EIEM.

Thanks to James Bottomley for (once again) pointing out the problem.
Signed-off-by: NGrant Grundler <grundler@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

Fix a longstanding smp bug

The problem is that both the timer and ipi interrupts are being called
with interrupts enabled, which isn't what anyone is expecting.

The IPI issue has just started to show up by causing a BUG_ON in the
slab debugging code.  The timer issue never shows up because there's an
eiem work around in our irq.c

The fix is to label both these as SA_INTERRUPT which causes the generic
irq code not to enable interrupts.

I also suspect the smp_call_function timeouts we're seeing might be
connected with the fact that we disable IPIs when handling any other
type of interrupt.  I've put a WARN_ON in the code for executing
smp_call_function() with IPIs disabled.
Signed-off-by: NJames Bottomley <jejb@parisc-linux.org>
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>

We must reassign z before looping through the zones kicking kswapd,
since it will be NULL if we hit an OOM condition and jump back to the
beginning again. 'z' is initially assigned before the restart: label. So
move the restart label up a little.
Signed-off-by: NJens Axboe <axboe@suse.de>

Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

It was causing too many problems, and this is not the proper type of
driver for this device.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This lets us remove a lot of code in the drivers that were all checking
the same thing.  It also found some bugs in a few of the drivers, which
has been fixed up.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix an error in the OHCI lh7a404 driver after the platform device
conversion.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This small patch adds a device ID used by older Maxtor OneTouch drives
(the ones with blue face-plate instead of the fancy silver one used in
newer models). The button on those drives works well with the current
driver.

From: Antti Andreimann <Antti.Andreimann@mail.ee>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/usb/core/devio.c: In function `proc_ioctl_compat':
drivers/usb/core/devio.c:1401: warning: passing arg 1 of `compat_ptr' makes integer from pointer without a cast
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

this patch from Herbert Xu fixes a race by moving termination of
the URBs into close() exclusively.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NOliver Neukum <oliver@neukum.name>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Peter Favrholdt reported that his Kodak flash device was getting
detected as a CDROM, and he helped me track this down to the fact that
the device takes a long time (approx 440ms!) to reset.

This patch increases the delay to 500ms, which solves the problem.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

the scsi layer now uses very short sg lists. This breaks the microtek
driver. Here is a patch fixes this and some other issues.
Signed-off-by: NOliver Neukum <oliver@neukum.name>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Updates pl2303_update_line_status() to handle X75 and SX1 Siemens mobiles
Signed-off-by: NLuiz Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch adds two new Siemens mobiles IDs for the pl2303 driver.
Signed-off-by: NLuiz Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The onetouch support doesn't suspend correctly (leaves an interrupt
URB posted, instead of unlinking it) so for now just disable it
when PM is in the air.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Jablotron usb serial interface identification
Signed-off-by: NJosef Balatka <balatka@email.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

I actually have this device, and kernel reports blacklist entry is no
longer neccessary.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/usb/core/devio.c: In function `proc_ioctl_compat':
drivers/usb/core/devio.c:1401: warning: passing arg 1 of `compat_ptr' makes integer from pointer without a cast

NFI if this is correct...

Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch deletes the bluetooth.txt help file of the bluetty driver and
hands over its major device nodes for character devices to the RFCOMM TTY
implementation of the Bluetooth subsystem.
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

USB: fix 'unused variable' warning
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch adds support for Graphire4, Cintiq 710, Intuos3 6x11, etc. and
report Device IDs.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch adds support for Graphire4, Cintiq 710, Intuos3 6x11, etc.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>