Grant Grundler [Thu, 17 Nov 2005 21:26:20 +0000 (16:26 -0500)]
[PARISC] Disable nesting of interrupts
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: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
James Bottomley [Thu, 17 Nov 2005 21:24:52 +0000 (16:24 -0500)]
[PARISC] Make sure timer and IPI execute with interrupts disabled
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: James Bottomley <jejb@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Jens Axboe [Thu, 17 Nov 2005 20:35:02 +0000 (21:35 +0100)]
[PATCH] VM: fix zone list restart in page allocatate
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.
[PATCH] USB: move CONFIG_USB_DEBUG checks into the Makefile
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.
Antti Andreimann [Thu, 17 Nov 2005 17:47:53 +0000 (09:47 -0800)]
[PATCH] USB: Maxtor OneTouch button support for older drives
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.
Andrew Morton [Thu, 17 Nov 2005 17:47:49 +0000 (09:47 -0800)]
[PATCH] usb devio warning fix
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
Daniel Drake [Thu, 17 Nov 2005 17:48:01 +0000 (09:48 -0800)]
[PATCH] usb-storage: Fix detection of kodak flash readers in shuttle_usbat driver
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.
David Brownell [Thu, 17 Nov 2005 17:47:28 +0000 (09:47 -0800)]
[PATCH] USB: onetouch doesn't suspend yet
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.
Andrew Morton [Thu, 17 Nov 2005 17:47:02 +0000 (09:47 -0800)]
[PATCH] USB: usbdevfs_ioctl 32bit fix
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: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Marcel Holtmann [Thu, 17 Nov 2005 17:46:39 +0000 (09:46 -0800)]
[PATCH] USB: Delete leftovers from bluetty driver
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.
Due to incomplete memory constraints, gcc would miscompile code with
sigaddset on i386 if sig arg was const.
A quote form Jakub to make the issue clear:
"You need either
__asm__("btsl %1,%0" : "+m"(*set) : "Ir"(_sig-1) : "cc");
or
__asm__("btsl %1,%0" : "=m"(*set) : "Ir"(_sig-1), "m"(*set) : "cc");
because the btsl instruction doesn't just set the memory to some
value, but needs to read its previous content as well. If you don't
tell that fact to GCC, GCC is of course free to optimize as if the asm
was just setting the value and not depended on the previous value."
Zhu Yi [Thu, 17 Nov 2005 05:58:30 +0000 (13:58 +0800)]
[PATCH] ipw2200: fix error log offset calculation
This fixes a slab corruption issue in the ipw2200 driver: it essentially
multiplied the error log number _twice_ by the size of the error element
entry (once explicitly in the code, and once implicitly as part of the
regular pointer arithmetic).
Cc: Henrik Brix Andersen <brix@gentoo.org> Cc: Bernard Blackham <bernard@blackham.com.au> Cc: Zilvinas Valinskas <zilvinas@gemtek.lt> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
--
Pekka Enberg [Wed, 16 Nov 2005 19:55:05 +0000 (21:55 +0200)]
[PATCH] ipw2200: disallow direct scanning when device is down
The function ipw_request_direct_scan() should bail out when the device
is down. This fixes a lockup caused by wpa_supplicant triggering
ipw_request_direct_scan() while the driver was in a middle of a reset
due to firmware errors.
Thanks to Zilvinas Valinskas for reporting the bug and helping me
debug it.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arnaud Giersch [Sat, 12 Nov 2005 23:38:18 +0000 (00:38 +0100)]
[MIPS] IP32 Fix and complete IP32 parport definitions
Fix, complete, and indent IP32 parport definitions.
Definition were wrong for CTXINUSE and DMACTIVE (1-bit shift).
Add macros DATA_BOUND, DATALEN_SHIFT, and CTRSHIFT.
Ralf Baechle [Tue, 8 Nov 2005 22:36:48 +0000 (22:36 +0000)]
[MIPS] feature-removal-schedule.txt: Schedule au1x00_uart for removal.
The 8250 serial driver now has the ability to deal with the differences
between the standard 8250 family of UARTs and their slightly strange
brother on Alchemy SOCs. The loss of features is not considered an
issue.
Jeff Garzik [Thu, 17 Nov 2005 10:44:44 +0000 (05:44 -0500)]
[libata sata_mv] handle lack of hardware nIEN support
Handle errata (it was unintentional on this h/w, whereas its intentional
on others) whereby the nIEN bit in Device Control is ignored, leading to
a situation where a hardware interrupt completes the qc before the
polling code has a chance to.
This will get fixed The Right Way(tm) once Albert Lee's irq-pio
branch is merged, as the more natural PIO method on this hardware is
interrupt-driven.
Jeff Garzik [Thu, 17 Nov 2005 15:59:48 +0000 (10:59 -0500)]
[libata sata_mv] SATA probe, DMA boundary fixes
- DMA boundary was being handled incorrectly. Copied the code from
ata_fill_sg(), since Marvell has the same DMA boundary needs.
(we can't use ata_fill_sg directly since we have different hardware
descriptors)
- cleaned up the SATA phy reset code, to deal with various errata
Patrick McHardy [Thu, 17 Nov 2005 07:14:19 +0000 (23:14 -0800)]
[NETFILTER]: Fix nf_conntrack compilation with CONFIG_NETFILTER_DEBUG
CC [M] net/netfilter/nf_conntrack_core.o
net/netfilter/nf_conntrack_core.c: In function 'nf_ct_unlink_expect':
net/netfilter/nf_conntrack_core.c:390: error: 'exp_timeout' undeclared (first use in this function)
net/netfilter/nf_conntrack_core.c:390: error: (Each undeclared identifier is reported only once
net/netfilter/nf_conntrack_core.c:390: error: for each function it appears in.)
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Yasuyuki Kozakai [Wed, 16 Nov 2005 20:55:37 +0000 (12:55 -0800)]
[IPV4,IPV6]: replace handmade list with hlist in IPv{4,6} reassembly
Both of ipq and frag_queue have *next and **prev, and they can be replaced
with hlist. Thanks Arnaldo Carvalho de Melo for the suggestion.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Wed, 16 Nov 2005 18:36:49 +0000 (18:36 +0000)]
[ARM] No need to include asm/proc-fns.h into asm/system.h
In the old days when arm26/arm32 was combined into the same
architecture, proc-fns.h provided the xchg implementation for
arm26 CPUs. Since we no longer combine these two, this include
is no longer required. Remove it.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Wed, 16 Nov 2005 18:03:10 +0000 (18:03 +0000)]
[ARM] Use unsigned long not u32 in atomic_cmpxchg
Since atomic.h does not include types.h, u32 may not be defined.
Since atomics are supposed to work on unsigned long quantities,
use unsigned long instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Wed, 16 Nov 2005 17:38:40 +0000 (17:38 +0000)]
[ARM] Move zone adjustment for SA1111 on SA11x0 platforms
Unfortunately, using PAGE_SHIFT in asm/arch/memory.h is unsafe, and we
can't include asm/page.h into this file because then we have a circular
dependency. Move the offending code to arch/arm/common/sa1111.c
instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Wed, 16 Nov 2005 17:23:57 +0000 (17:23 +0000)]
[ARM] Add linux/compiler.h includes where required
atomic.h, bitops.h and mmu_context.h are using likely/unlikely.
thread_info.h uses __attribute_const__. Hence these files require
linux/compiler.h to be included.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Wed, 16 Nov 2005 15:05:11 +0000 (15:05 +0000)]
[ARM] 3165/1: fix atomic_cmpxchg() implementation for ARMv6+
Patch from Nicolas Pitre
If 'old' and 'oldval' are different then 'res' never gets set. In that
case, if ever %0 happened to contain anything but zero (rather likely)
then the code will loop forever (or until another CPU just come along
and change the atomic value to match 'old' which is rather unlikely).
Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Wed, 16 Nov 2005 14:59:51 +0000 (14:59 +0000)]
[ARM] compressed/head.S debugging defaults to asm/arch/debug-macro.S
Since we want new platforms to use debug-macro.S, make the decompressor
debugging method default to using this include file rather than having
new platforms add to an #if defined().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Albert Lee [Wed, 16 Nov 2005 09:06:18 +0000 (17:06 +0800)]
[PATCH] libata: honor the transfer cycle time speficied by the EIDE device
The following code segment is not functional because the transfer cycle time speficied by
the EIDE device is later overwritten by ata_timing_quantize():
/*
* If the drive is an EIDE drive, it can tell us it needs extended
* PIO/MW_DMA cycle timing.
*/
if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */
memset(&p, 0, sizeof(p));
(snip)
ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B);
<== uninitialized "t" is used here
}
/*
* Convert the timing to bus clock counts.
*/
ata_timing_quantize(s, t, T, UT); <== t is overwritten by quantized s
The patch has been submitted for ide-timing.h before:
http://marc.theaimsgroup.com/?l=linux-ide&m=110820013425454&w=2
Resubmitted for libata.
Changes:
- Minor fix to honor the following transfer cycle time speficied by the device
- id[65]: Minimum Multiword DMA transfer cycle time per word
- id[67]: Minimum PIO transfer cycle time without flow control
- id[68]: Minimum PIO transfer cycle time with IORDY
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
======= Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
[PATCH] powerpc: Make the vDSO functions set error code (#2)
The vDSO functions should have the same calling convention as a syscall.
Unfortunately, they currently don't set the cr0.so bit which is used to
indicate an error. This patch makes them clear this bit unconditionally
since all functions currently succeed. The syscall fallback done by some
of them will eventually override this if the syscall fails.
This also changes the symbol version of all vdso exports to make sure
glibc can differenciate between old and fixed calls for existing ones
like __kernel_gettimeofday.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Paul Mackerras [Wed, 16 Nov 2005 02:38:21 +0000 (13:38 +1100)]
powerpc: Move ppc64 boot wrapper code over to arch/powerpc
This also extends the code to handle 32-bit ELF vmlinux files as well
as 64-bit ones. This is sufficient for booting on new-world 32-bit
powermacs (i.e. all recent machines).
The merge of machine types broke boot with yaboot & ARCH=ppc due to the
old code still retreiving the old-syle machine type passed in by yaboot.
This patch fixes it by translating those old numbers. Since that whole
mecanism is deprecated, this is a temporary fix until ARCH=ppc uses the
new prom_init that the merged architecture now uses for both ppc32 and
ppc64 (after 2.6.15)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Guido Guenther [Tue, 15 Nov 2005 06:28:05 +0000 (17:28 +1100)]
[PATCH] PowerBook 6,1: headphone not detected after suspend
ever since suspend to disk works I had the problem that headphone
(un)plugging doesn't get detected properly anymore after the first
resume.
Reloading the module worked around this ever since, however the real
cause of the problem was that after a resume the driver only got
interrupts on "unplug" not on "plug". Reactivating the headphone status
interrupt in tumbler_resume fixes this. This shouldn't cause
any trouble with software suspend, but it would be nice if somebody
could confirm this:
Signed-off-by: Guido Guenther <agx@sigxcpu.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
I discovered that in some cases (PowerMac for example) we wouldn't
properly map the PCI IO space on recent kernels. In addition, the code
for initializing PCI host bridges was scattered all over the place with
some duplication between platforms.
This patch fixes the problem and does a small cleanup by creating a
pcibios_alloc_controller() in pci_64.c that is similar to the one in
pci_32.c (just takes an additional device node argument) that takes care
of all the grunt allocation and initialisation work. It should work for
both boot time and dynamically allocated PHBs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
My patch moving ppc64 RTC to genrtc was supposed to update all
defconfigs, but for some reason, the patch actually posted only had the
pseries one... ouch. This patch properly updates all defconfigs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
projects / linux-2.6 / log