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path: root/drivers/ieee1394/ohci1394.c (follow)
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2009-11-18ieee1394: Use hweight32Akinobu Mita1-6/+2
Use hweight32 instead of counting for each bit Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (add required include)
2009-01-04ieee1394: mark bus_info_data as a __be32 arrayHarvey Harrison1-1/+1
Two access functions get_max_rom and set_hw_config_rom are changed to take __be32 as well. Only bus_info_data was ever passed in so this is OK. All other uses of bus_info_data treated it as a be32 value already. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-01-04ieee1394: ohci1394: flush MMIO writes before delay in initializationStefan Richter1-4/+6
and replace busy-wait by msleep. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-01-04ieee1394: ohci1394: pass error codes from request_irq throughStefan Richter1-5/+7
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-01-04ieee1394: ohci1394: don't leave interrupts enabled during suspend/resumeFrans Pop1-0/+8
On my HP 2510p I get the following in dmesg during near the end of most resumes from suspend to RAM: irq 19: nobody cared (try booting with the "irqpoll" option) Pid: 0, comm: swapper Not tainted 2.6.28-rc7 #67 Call Trace: <IRQ> [<ffffffffa00ee9e1>] ? ohci_irq_handler+0x60/0x7e9 [ohci1394] [<ffffffff8026aa4d>] __report_bad_irq+0x38/0x87 [<ffffffff8026abaa>] note_interrupt+0x10e/0x174 [<ffffffff8026b262>] handle_fasteoi_irq+0xa7/0xd1 [<ffffffff8020eb87>] do_IRQ+0x73/0xe4 [<ffffffff8020c626>] ret_from_intr+0x0/0xa <EOI> [<ffffffffa0012606>] ? acpi_idle_enter_bm+0x26b/0x2b2 [processor] [<ffffffffa00125fc>] ? acpi_idle_enter_bm+0x261/0x2b2 [processor] [<ffffffff8024f30f>] ? notifier_call_chain+0x33/0x5b [<ffffffff803b9c64>] ? cpuidle_idle_call+0x8c/0xc4 [<ffffffff8020b312>] ? cpu_idle+0x4a/0x9a [<ffffffff8042c5c8>] ? rest_init+0x5c/0x5e handlers: [<ffffffffa00ee981>] (ohci_irq_handler+0x0/0x7e9 [ohci1394]) Disabling IRQ #19 There also seems to be an interrupt storm during suspend/resume when this happens: 19: 99968 33 IO-APIC-fasteoi ohci1394 This patch gets rid of both issues and makes the resume as a whole significantly faster. Signed-off-by: Frans Pop <elendil@planet.nl> As was pointed out in http://lkml.org/lkml/2008/12/6/127, this does not fix the cause of the interrupt storm. However, since the source of the interrupts could not be determined yet, we make the system at least more usable with this change. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-25ieee1394: rawiso: requeue packet for transmission after skipped cyclePieter Palmers1-0/+34
As it seems, some host controllers have issues that can cause them to skip cycles now and then when using large packets. I suspect that this is due to DMA not succeeding in time. If the transmit fifo can't contain more than one packet (big packets), the DMA should provide a new packet each cycle (125us). I am under the impression that my current PCI express test system can't guarantee this. In any case, the patch tries to provide a workaround as follows: The DMA program descriptors are modified such that when an error occurs, the DMA engine retries the descriptor the next cycle instead of stalling. This way no data is lost. The side effect of this is that packets are sent with one cycle delay. This however might not be that much of a problem for certain protocols (e.g. AM824). If they use padding packets for e.g. rate matching they can drop one of those to resync the streams. The amount of skips between two userspace wakeups is counted. This number is then propagated to userspace through the upper 16 bits of the 'dropped' parameter. This allows unmodified userspace applications due to the following: 1) libraw simply passes this dropped parameter to the user application 2) the meaning of the dropped parameter is: if it's nonzero, something bad has happened. The actual value of the parameter at this moment does not have a specific meaning. A libraw client can then retrieve the number of skipped cycles and account for them if needed. Signed-off-by: Pieter Palmers <pieterp@joow.be> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: ohci1394: missing PPC PMac feature calls in failure pathStefan Richter1-3/+3
The failure path of ohci1394_pci_probe() reuses ohci1394_pci_remove(). Doing so it missed to call ohci1394_pmac_off() in a few unlikely early error cases. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: ohci1394: refactor some printk format stringsStefan Richter1-15/+15
to reduce the size of ohci1394.ko. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: ohci1394: unroll a macro with returnStefan Richter1-38/+54
We don't want to hide something like return in a preprocessor macro. Unroll the macro and use a goto, which also reduces the size of ohci1394.ko. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: Use shorter list_splice_init() for brevity.Robert P. J. Day1-4/+2
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: replace remaining __FUNCTION__ occurrencesHarvey Harrison1-1/+1
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: ohci1394: refactor probe, remove, suspend, resumeStefan Richter1-64/+49
Clean up shared code and variable names. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-04-18ieee1394: ohci1394: switch on bus power after resume on PPC PMacStefan Richter1-2/+6
The platform feature calls in the suspend method switched off cable power, but the calls in the resume method did not switch it back on. Add the necessary feature call to .resume. Also add the corresponding call to .suspend to make .suspend's behavior explicitly the same on all PMacs. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-01-30ieee1394: ohci1394: don't schedule IT tasklets on IR eventsStefan Richter1-4/+8
Bug noted by Pieter Palmers: Isochronous transmit tasklets were scheduled on isochronous receive events, in addition to the proper isochronous receive tasklets. http://marc.info/?l=linux1394-devel&m=119783196222802 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-09-20ieee1394: ohci1394: fix initialization if built non-modularStefan Richter1-3/+1
Initialization of ohci1394 was broken according to one reporter if the driver was statically linked, i.e. not built as loadable module. Dmesg: PCI: Device 0000:02:07.0 not available because of resource collisions ohci1394: Failed to enable OHCI hardware. This was reported for a Toshiba Satellite 5100-503. The cause is commit 8df4083c5291b3647e0381d3c69ab2196f5dd3b7 in Linux 2.6.19-rc1 which only served purposes of early remote debugging via FireWire. This functionality is better provided by the currently out-of-tree driver ohci1394_earlyinit. Reversal of the commit was OK'd by Andi Kleen. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10ieee1394: remove old isochronous ABIStefan Richter1-211/+10
Based on patch "the scheduled removal of RAW1394_REQ_ISO_{SEND,LISTEN}" from Adrian Bunk, November 20 2006. This patch also removes the underlying facilities in ohci1394 and disables them in pcilynx. That is, hpsb_host_driver.devctl() and hpsb_host_driver.transmit_packet() are no longer used for iso reception and transmission. Since video1394 and dv1394 only work with ohci1394 and raw1394's rawiso interface has never been implemented in pcilynx, pcilynx is now no longer useful for isochronous applications. raw1394 will still handle the request types but will complete the requests with errors that indicate API version conflicts. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10ieee1394: ohci1394: remove dead CONFIG variableStefan Richter1-43/+8
spotted by Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30ieee1394: ohci1394: Fix mistake in printk message.Simon Arlott1-1/+1
Fix the "attempting to setting" message in ohci1394. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl registerBernhard Kauer1-6/+2
Remove the unneeded code that clears, sets and again clears the rcvPhyPkt bit in the ohci1394 LinkControl register in ohci_initialize(). Signed-off-by: Bernhard Kauer <kauer@os.inf.tu-dresden.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30ieee1394: ohci1394: fix cosmetic problem in error loggingStefan Richter1-0/+1
If posted write failed, an "Unhandled interrupt(s) 0x00000100" message was logged by mistake. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30ieee1394: move some comments from declaration to definitionStefan Richter1-0/+1
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-17Storage class should be before const qualifierTobias Klauser1-1/+1
The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau1-1/+0
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-08ieee1394: restore config ROM when resumingStefan Richter1-3/+1
After PM suspend + resume, the local configuration ROM was not restored. This prevented remote nodes from recognizing the resuming machine. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08ieee1394: ohci1394: drop pcmcia-cs compatibility codeStefan Richter1-7/+2
#ifdef PCMCIA is only true if compiled inside pcmcia-cs, isn't it? Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08Add PCI class ID for firewire OHCI controllers.Kristian Høgsberg1-3/+1
Pull this define out of drivers/ieee1394/ohci1394.c and rename to match other PCI class defines. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ieee1394: ohci1394: call PMac code in shutdown only for proper machinesStefan Richter1-1/+1
There has been an if(...) missing, for ages. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ieee1394: ohci1394: reformat PPC_PMAC platform codeStefan Richter1-20/+14
Adjust whitespace and line lengths Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ieee1394: ohci1394: add PPC_PMAC platform code to driver probeStefan Richter1-4/+15
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=7431 iBook G3 threw a machine check exception and put the display backlight to full brightness after ohci1394 was unloaded and reloaded. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ohci1394: shortcut irq printingAlexey Dobriyan1-4/+2
To print irq number no need to transform to string using %d, then print using %s. Just use %d. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2006-12-07ieee1394: ohci1394: proper log messages in suspend and resumeStefan Richter1-11/+15
- correct thinko in one of my last commits: cannot use PRINT macro with ohci == NULL - add log messages on ohci == NULL and on pci_enable_device != 0 - update log macros from patch "revert fail on error in suspend" to use PRINT and DBGMSG where possible Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ieee1394: ohci1394: revert fail on error in suspendStefan Richter1-2/+11
Some errors during preparation for suspended state can be skipped with a warning instead of a failure of the whole suspend transition, notably an error in pci_set_power_state. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ieee1394: ohci1394: suspend/resume cosmeticsStefan Richter1-78/+48
Reorder the definitions of ohci1394_pci_suspend and _resume. Remove redundant comments. Beautify return statements. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07ohci1394: steps to implement suspend/resumeBernhard Kaindl1-14/+78
I did a quick shot on what I described and the appended patch does the first thing needed for working suspend/resume in ohci1394 which is HW de- and re-initialisation. It works with suspend2disk on my Ricoh R5C552 IEEE 1394 Controller with the 2.6.17 kernel to the extent that if I call dvgrab --interactive after suspend2disk without unloading ohci1394, it does not lock up dvgrab with 100% CPU but properly connects to the camera, given that I first unplug and plug the camera after coming back from suspend. I guess that could be fixed by forcing a bus reset in the resume function. I cannot test suspend to RAM here at the moment and should follow the guidelines in Documentation/power/pci.txt also, so this is rather a quick report than a finished patch and there are some rough edges: However, with this patch, I have to unload at least some in-kernel users of ohci1394 like dv1394 or video1394 before suspending. Not doing that caused an Oops and a bad tasklet error, probably from not handling ISO tasklets during suspend/resume properly. Maybe these can be temporarily cleared or unregistered and re-registered for suspend/resume with help from the other layers or from the highlevel 1394 core, but I do not really know what these do. But this patch provides a useful base to start from and is already of much help for people which do not need dv1394 and video1394 or can unload them at least during suspend. I cannot test function with sbp2 at the moment, but raw1394 seems to work fine. Signed-off-by: Bernhard Kaindl <bk@fsfe.org> Update 1: merge with previous two ohci1394 suspend/resume patches Update 2: version for application on top of Linux 2.6.19-rc4 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07[PATCH] slab: remove SLAB_KERNELChristoph Lameter1-4/+4
SLAB_KERNEL is an alias of GFP_KERNEL. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-29ieee1394: ohci1394: revert fail on error in suspendStefan Richter1-5/+14
Some errors during preparation for suspended state can be skipped with a warning instead of a failure of the whole suspend transition, notably an error in pci_set_power_state. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells1-2/+1
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-09-17ieee1394: ohci1394: check for errors in suspend or resumeStefan Richter1-6/+11
Some of the suspend and resume litany may fail. Tell the PCI core about it. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-09-17set power state of firewire host during suspendPavel Machek1-4/+6
Put firewire host controller in PCI Dx state for system suspend. (I was not able to measure any power savings, but it sounds like right thing to do, anyway.) Signed-off-by: Pavel Machek <pavel@suse.cz> Update by stefanr: Shuffle with existing PPC_PMAC code. Set power state in the resume hook too. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-09-17ieee1394: ohci1394: more obvious endianess handlingStefan Richter1-14/+13
Rename ohci1394's packet_swab to header_le32_to_cpu to better reflect what it actually does. Also, define a constant array as 'const' and check the array index properly. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-09-17ieee1394: ohci1394: fix endianess bug in debug messageStefan Richter1-1/+1
The transaction labels were misprinted int the debug printk "Packet received from node..." due two byte-swapping once too often. Affected were big endian machines, except UniNorth based ones. Fix tested by Wolfgang Pfeiffer. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-09-17CONFIG_PM=n slim: drivers/ieee1394/ohci1394.cAlexey Dobriyan1-2/+4
Remove some code which is unneeded if CONFIG_PM=n. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-09-17ieee1394: safer definition of empty macrosStefan Richter1-4/+4
A deactivated macro, defined as "#define foo(bar)", will result in silent corruption if somebody forgets a semicolon after a call to foo. Replace it by "#define foo(bar) do {} while (0)" which will reveal any respective syntax errors. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-09-17Initialize ieee1394 early when built inAndi Kleen1-1/+3
This makes debugging with firescope easier. Signed-off-by: Andi Kleen <ak@suse.de> (original patch) Update: - no need for #ifdef MODULE - add comment in ieee1394_core, more verbose comment in ohci1394 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (update)
2006-09-17ieee1394: merge from LinusStefan Richter1-2/+2
Conflicts: drivers/ieee1394/hosts.c Patch "lockdep: annotate ieee1394 skb-queue-head locking" was meddling with patch "ieee1394: fix kerneldoc of hpsb_alloc_host". Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-08-27[PATCH] 1394: fix for recently added firewire patch that breaks things on ppcDanny Tholen1-2/+2
Recently a patch was added for preliminary suspend/resume handling on !PPC_PMAC. However, this broke both suspend and firewire on powerpc because it saves the pci state after the device has already been disabled. This moves the save state to before the pmac specific code. Signed-off-by: Danny Tholen <obiwan@mailmij.org> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ben Collins <bcollins@ubuntu.com> Cc: Jody McIntyre <scjody@modernduck.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03[PATCH] ieee1394: replace __inline__ by inlineStefan Richter1-2/+3
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Ben Collins <bcollins@ubuntu.com>
2006-07-02[PATCH] irq-flags: firewire: Use the new IRQF_ constantsThomas Gleixner1-2/+2
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jody McIntyre <scjody@modernduck.com> Cc: Ben Collins <bcollins@debian.org> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-27[PATCH] 64bit Resource: convert a few remaining drivers to use resource_size_t where neededGreg Kroah-Hartman1-1/+1
Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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