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path: root/drivers/usb/storage
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2007-07-12USB: add USB-Persist facilityAlan Stern
This patch (as886) adds the controversial USB-persist facility, allowing USB devices to persist across a power loss during system suspend. The facility is controlled by a new Kconfig option (with appropriate warnings about the potential dangers); when the option is off the behavior will remain the same as it is now. But when the option is on, people will be able to use suspend-to-disk and keep their USB filesystems intact -- something particularly valuable for small machines where the root filesystem is on a USB device! Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-12USB: remove references to dev.power.power_stateAlan Stern
This revised patch (as891b) removes two unnecessary references to intf->dev.power.power_state from usb-storage, and replaces a reference to root_hub->dev.power.power_state with a check of hcd->state. This is in preparation for the removal of dev.power.power_state, which is already deprecated. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-06-08USB: UNUSUAL_DEV: Sync up some reported devices from UbuntuBen Collins
UNUSUAL_DEV: Sync up some reported devices from Ubuntu Various unusual dev entries accumulated from Ubuntu bug reports. Signed-off-by: Ben Collins <bcollins@ubuntu.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Phil Dibowitz <phil@ipom.com>
2007-05-22USB: Onetouch - switch to using input_dev->dev.parentDmitry Torokhov
In preparation for struct class_device -> struct device input core conversion, switch to using input_dev->dev.parent when specifying device position in sysfs tree. Also, do not access input_dev->private directly, use helpers. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-22usb-storage: ignore Sitecom WL-117 USB-WLANMatthew Davidson
The Sitecom WL-117 is another "driverless" ZD1211 device where the virtual windows driver CD must be ejected before the WLAN device appears. zd1211rw takes care of the ejecting, but usb-storage must be told not to claim the device. From: Matthew Davidson <mj.davidson@gmail.com> Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-27USB: Remove Huawei unusual_devs entryPhil Dibowitz
Per the Rui Santos and the hardware manufacturers, this actually inhibits useful parts of the hardware. The correct way to use this hardware is with the software at http://www.kanoistika.sk/bobovsky/archiv/umts/ and the manufacturers are also planning on including Linux drivers/material in future revisions. CC: Rui Santos <rsantos@grupopie.com> CC: <johann.wilhelm@student.tugraz.at> CC: <zihan@huawei.com> CC: <wanganyu1983@huawei.com> CC: <dingjianjian@huawei.com> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27libusual: change block scope variable to function scopePete Zaitcev
Someone changed the code to kthread and used his style instead of mine. The problem with the block variables is that they provoke shadowing, which is actually exactly what has happened in my other tree which has the class patch. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-11USB: Nikon D80 unusual device patchEmil Larsson
the Nikon D80 camera will not work without an UNUSUAL_DEV entry embodied in the attached patch (made against 2.6.20.3). Hope you find it helpful, or if not, pass it along to someone who does. From: Emil Larsson <emil@swip.net> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-19USB: RAZR v3i unusual_devsPete Zaitcev
This adds an unusual_devs entry for the Motorola RAZR 3vi. From: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-09USB storage: Nokia 6288 unusual_devs entryAndrew Nayenko
This patch adds an usual_devs entry for the Nokia 6288. Originally from Andrew with a re-diff by Phil. From: Andrew Nayenko <relan@bk.ru> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-09USB storage: Removed duplicate supertop unusual_dev entryPhil Dibowitz
This patch removes the duplicate supertop entries that made it into the .21 rc kernels. Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-05[PATCH] usb-storage: do not rebuild when kernel version changesSam Ravnborg
Replacing use of UTS_RELEASE with utsname()->release avoids that the usb-storage driver is recompiled each time the kernel version changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16USB Storage: US_FL_IGNORE_RESIDUE needed for Aiptek MP3 PlayerDylan Taft
Device will not work as a mass storage device without US_FL_IGNORE_RESIDUE. I bought this mp3 player that takes SD cards here http://www.aiptek.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=AX4&Category_Code=MP3&Store_Code=AS I can provide the errors in dmesg, if necessary, but this flag was determined as necessary by doing a quick google on the errors that were shown in dmesg. Signed-off-by: Dylan Taft <d13f00l@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16USB Storage: indistinguishable devices with broken and unbroken firmwareOliver Neukum
there's a USB mass storage device which exists in two version. One reports the correct size and the other does not. Apart from that they are identical and cannot be told apart. Here's a heuristic based on the empirical finding that drives have even sizes. Signed-off-by: Oliver Neukum <oneukum@suse.de> Acked-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16USB: unusual_devs update for Sony P990i phoneAlan Stern
This patch (as846) adds the IGNORE_RESIDUE flag to the unusual_devs entry for Sony-Ericsson's P990i phone. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16USB: Teac HD-35PU patch to unusual_devs.hThomas Bächler
Hi, one of my users has two USB hard drives that need the following patch, otherwise there are I/O errors similar to those here: http://bugme.osdl.org/show_bug.cgi?id=3223 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau
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>
2007-02-07USB: remove duplicate device id from usb_storageGreg Kroah-Hartman
As pointed out by Kay Sievers <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07usb-storage: use first bulk endpoints, not lastAlan Stern
According to the Bulk-Only spec, usb-storage is supposed to use the _first_ bulk-in and bulk-out endpoints it finds, not the _last_. And while we're at it, we ought to test the direction of the interrupt endpoint as well. This patch (as842) makes both changes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07usb-storage: SCSI level fixesAlan Stern
This patch (as835) removes from usb-storage the code which sets all devices to a SCSI level of at least SCSI-2. The original reasons for doing this no longer apply, and in fact it prevents certain kinds of ATA pass-thru commands from being used. The patch also marks CB and CBI devices that are SCSI-0 (legacy SCSI) as being single-LUN, since the combined SCSI-over-USB transport protocol has no way to convey LUN information to these devices. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07USB: <linux/usb_ch9.h> becomes <linux/usb/ch9.h>David Brownell
This moves <linux/usb_ch9.h> to <linux/usb/ch9.h> to reduce some of the clutter of usb header files. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07USB: unusual_devs.h for Sony floppyLuiz Fernando N. Capitulino
This patch increases the range for 0x054c:0x002c devices to make the following Sony USB floppy to work: T: Bus=02 Lev=01 Prnt=01 Port=02 Cnt=02 Dev#= 6 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=054c ProdID=002c Rev=20.00 S: Manufacturer=SONY S: Product=USB Floppy C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=04 Prot=00 Driver=usb-storage E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 2 Ivl=127ms Signed-off-by: Marcelo Ricardo Leitner <mrl@mandriva.com> Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-01-22USB: unusual_devs.h entry for nokia 6233Manuel Osdoba
In appendix a patch for the nokia 6233 mobile phone is included. The patch is against 2.6.20-rc5. It is my first patch. Hopefully it has the right format. The code makes my nokia 6233 on my computer work. From: Manuel Osdoba <manuel.osdoba@tu-ilmenau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-01-22USB: unusual_devs.h for 0x046b:ff40Pete Zaitcev
American Megatrends did something wrong in their floppy emulator. It breaks with both kinds of MODE SENSE which our stack sends. Alan and I tried a few tweaks, and got LUNs sensed right, but US_FL_NO_WP_DETECT is still needed. I set the firmware bracket to 1.00 exactly, in case AMI or Sun fix it with a firmware update. Hey, you never know. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-01-05USB storage: fix ipod ejecting issuePete Zaitcev
This patch from Pete fixes the 'ejecting problem' on yet another ipod. Please applyt. Signed-off-by: Pete Zaitcev <zaitcev@yahoo.com> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-01-05USB Storage: unusual_devs: add supertop drivesPhil Dibowitz
This combines patches from Alan Stern and Robert Schedel for two "Super Top" drives that need the IGNORE_RESIDUE flag but have different vendor IDs. Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-20USB Storage: remove duplicate Nokia entry in unusual_devs.hGreg Kroah-Hartman
How many times are we going to merge this entry... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-20[PATCH] USB: Nokia E70 is an unusual deviceAndrew Morton
Taken from http://bugzilla.kernel.org/show_bug.cgi?id=7508 When the Nokia E70 Phone is plugged in to the USB port, I get: end_request: I/O error, dev sda, sector 1824527 sd 0:0:0:0: SCSI error: return code = 0x10070000 end_request: I/O error, dev sda, sector 1824535 sd 0:0:0:0: SCSI error: return code = 0x10070000 The fix is to add these lines to drivers/usb/storage/unusual_devs.h: Cc: <honkkis@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-20USB: Nokia E70 is an unusual deviceAndrew Morton
Taken from http://bugzilla.kernel.org/show_bug.cgi?id=7508 When the Nokia E70 Phone is plugged in to the USB port, I get: end_request: I/O error, dev sda, sector 1824527 sd 0:0:0:0: SCSI error: return code = 0x10070000 end_request: I/O error, dev sda, sector 1824535 sd 0:0:0:0: SCSI error: return code = 0x10070000 The fix is to add these lines to drivers/usb/storage/unusual_devs.h: Cc: <honkkis@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-20usb-storage: Ignore the virtual cd-drive of the Huawei E220 USB ModemJohann Wilhelm
This prevents the kernel from detecting the virtual cd-drive with the Windows drivers. Signed-off-by: Johann Wilhelm <johann.wilhelm@student.tugraz.at> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-13[PATCH] getting rid of all casts of k[cmz]alloc() callsRobert P. J. Day
Run this: #!/bin/sh for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do echo "De-casting $f..." perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f done And then go through and reinstate those cases where code is casting pointers to non-pointers. And then drop a few hunks which conflicted with outstanding work. Cc: Russell King <rmk@arm.linux.org.uk>, Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Greg KH <greg@kroah.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Karsten Keil <kkeil@suse.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Ian Kent <raven@themaw.net> Cc: Steven French <sfrench@us.ibm.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Add include/linux/freezer.h and move definitions from sched.hNigel Cunningham
Move process freezing functions from include/linux/sched.h to freezer.h, so that modifications to the freezer or the kernel configuration don't require recompiling just about everything. [akpm@osdl.org: fix ueagle driver] Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] slab: remove SLAB_ATOMICChristoph Lameter
SLAB_ATOMIC is an alias of GFP_ATOMIC Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] slab: remove SLAB_NOIOChristoph Lameter
SLAB_NOIO is an alias of GFP_NOIO with a single instance of use. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-01USB: add Digitech USB-Storage to unusual_devs.hJaco Kroon
The mass storage device from Digitech designed for Flash Cards, as found on (for example) the GNX4 device has issues with residue, similar to the bug report at http://kerneltrap.org/node/6297. This patch adds the faulty storage device to unusual_devs.h, this not only reduces the noise in dmesg but also increases the transfer speeds by a factor of 7x for me (89kB/s -> 637kB/s). T: Bus=02 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1210 ProdID=0003 Rev= 1.00 S: Manufacturer=DigiTech HMG S: Product=DigiTech Mass Storage C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms Signed-off-by: Jaco Kroon <jaco@kroon.co.za> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01USB: storage: Use usb_endpoint_* functionsLuiz Fernando N. Capitulino
Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01USB: onetouch: Use usb_endpoint_* functionsLuiz Fernando N. Capitulino
Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-11-16usb-storage: Remove duplicated unusual_devs.h entries for Sony Ericsson P990iSergey Vlasov
For some reason the unusual_devs.h entry for Sony Ericsson P990i had three identical copies in a wrong place in the file in addition to the correct entry. Signed-off-by: Sergey Vlasov <vsu@altlinux.ru> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-11-16USB Storage: unusual_devs.h entry for Sony Ericsson P990iJan Mate
USB Storage: this patch adds support for Sony Ericsson P990i Signed-off-by: Jan Mate <mate@fiit.stuba.sk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-11-16USB: Fix UCR-61S2B unusual_dev entryPhil Dibowitz
Recently this entry's bcd scope was narrowed so as not to falsly apply to bcd's other than 0x0110. But while it breaks those of a larger bcd, it is still needed for those of a smaller bcd - so this changes the lower bcd limit to 0x0000. Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-11-03USB Storage: unusual_devs.h entry for Sony Ericsson P990iJan Mate
USB Storage: this patch adds support for Sony Ericsson P990i Signed-off-by: Jan Mate <mate@fiit.stuba.sk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-11-03USB: usb-storage: Unusual_dev updatePhil Dibowitz
The protocol in this entry is needed for some versions of the device but not others. This adds the NEED_OVERRIDE flag to prevent it complaining to users who don't need it. Signed-off-by: Phil Dibowitz <phil@ipom.com>
2006-10-17USB Storage: unusual_devs.h entry for Sony Ericsson P990iJan Mate
USB Storage: this patch adds support for Sony Ericsson P990i Signed-off-by: Jan Mate <mate@fiit.stuba.sk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-17USB: unusual_devs entry for Nokia 6234Alan Stern
This patch (as803) adds an unusual_devs entry for the Nokia 6234 mobile phone. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-17USB: Mitsumi USB FDD 061M: UNUSUAL_DEV multilun fixTobias Lorenz
From: Tobias Lorenz <tobias.lorenz@gmx.net> Signed-off-by: Phil Dibowitz <phil@ipom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-17USB: unusual_devs entry for Nokia 6131Alan Stern
This patch (as796) adds an unusual_devs entry for the Nokia 6131, which doesn't like large transfer sizes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
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)
2006-10-03Fix several typos in drivers/Matt LaPlante
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-09-30[PATCH] BLOCK: Make USB storage depend on SCSI rather than selecting it [try #6]David Howells
This makes CONFIG_USB_STORAGE depend on CONFIG_SCSI rather than selecting it, as selecting it makes CONFIG_USB_STORAGE override the dependencies of SCSI, causing it to turn on even if they aren't all met. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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