- 05 10月, 2006 1 次提交
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由 David Howells 提交于
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: NDavid Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
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- 04 10月, 2006 1 次提交
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由 Dave Jones 提交于
kbuild explicitly includes this at build time. Signed-off-by: NDave Jones <davej@redhat.com>
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- 29 9月, 2006 1 次提交
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由 Sean Young 提交于
New phidget interface kits (type 8/8/8) reset their outputs if they haven't received a set report for 2 seconds. Signed-off-by: NSean Young <sean@mess.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 28 9月, 2006 10 次提交
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由 Pete Zaitcev 提交于
The purpose of this patch is to split off the case when a device does not reply on the lower level (which is reported by HC hardware), and a case when the device accepted the request, but does not reply at upper level. This redefinition allows to diagnose issues easier, without asking the user if the -110 happened "immediately". The usbmon splits such cases already thanks to its timestamp, but it's not always available. I adjusted all drivers which I found affected (by searching for "urb"). Out of tree drivers may suffer a little bit, but I do not expect much breakage. At worst they may print a few messages. Signed-off-by: NPete Zaitcev <zaitcev@redhat.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Tony Olech 提交于
This "ftdi-elan" module is one half of the "driver" for ELAN's Uxxx series adapters which are USB to PCMCIA CardBus adapters. Currently only the U132 adapter is available and it's module is called "u132-hcd". When the USB hot plug subsystem detects a Uxxx series adapter it should load this module. Upon a successful device probe() the jtag device file interface is created and the status workqueue started up. The jtag device file interface exists for the purpose of updating the firmware in the Uxxx series adapter, but as yet it had never been used. The status workqueue initializes the Uxxx and then sits there polling the Uxxx until a supported PCMCIA CardBus device is detected it will start the command and respond workqueues and then load the module that handles the device. This will initially be only the u132-hcd module. The status workqueue then just polls the Uxxx looking for card ejects. The command and respond workqueues implement a command sequencer for communicating with the firmware on the other side of the FTDI chip in the Uxxx. This "ftdi-elan" module exports some functions to interface with the sequencer. Note that this module is a USB client driver. Note that the "u132-hcd" module is a (cut-down OHCI) host controller. Thus we have a topology with the parent of a host controller being a USB client! This really stresses the USB subsystem semaphore/mutex handling in the module removal. Signed-off-by: NTony Olech <tony.olech@elandigitalsystems.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Steven Haigh 提交于
This patch adds support for Ontrak ADU USB devices. Fixed for printk issues by Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: NSteven Haigh <netwiz@crc.id.au> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Greg Kroah-Hartman 提交于
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: NLuiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: NLuiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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Making structs const prevents accidental bugs and with the proper debug options they're protected against corruption. Signed-off-by: NLuiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sean Young 提交于
device_create_file() could fail, add proper error paths for this condition. Signed-off-by: NSean Young <sean@mess.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sean Young 提交于
This patch creates a device class phidget and add the phidget drivers to them. Signed-off-by: NSean Young <sean@mess.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sean Young 提交于
This driver add support for the Phidgets Inc., MotorControl via sysfs. Also some minor fixes for the InterfaceKit. Signed-off-by: NSean Young <sean@mess.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 08 9月, 2006 1 次提交
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由 Nobuhiro Iwamatsu 提交于
This patch is support USB20SVGA-WH & USB20SVGA-DG of the sisusb device. As for this device, Device ID is different according to the color of the product. A blue device is supported. However, a green, white device is not supported. http://www.lubic.jp/uv_method.html ( Japanese only ) . Green, white USB20SVGA comes to work by applying the patch . And, it be able to use three USB20SVGA( Blue , Green , White ). Signed-off-by: NNobuhiro Iwamatsu <hemamu@t-base.ne.jp> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 27 8月, 2006 1 次提交
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由 Greg Kroah-Hartman 提交于
This was pointed out by Adrian Bunk <bunk@stusta.de>, as found by the Coverity Checker. Cc: Adrian Bunk <bunk@stusta.de> Cc: Oliver Bock <o.bock@fh-wolfenbuettel.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 12 8月, 2006 1 次提交
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由 Orjan Friberg 提交于
In my quest to try and figure out why test 14 (control write) doesn't work with my EZ-USB board, I noticed that sometimes testusb reported no error even though the kernel log complained "byte 0 is 0 not 2" etc. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 03 8月, 2006 1 次提交
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由 Oliver Bock 提交于
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 13 7月, 2006 2 次提交
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由 Eric Sesterhenn 提交于
coverity spotted (id #185) that we still use urb, if the allocation fails in the error path. This patch fixes this by returning directly. Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Bock 提交于
This is a new driver for the Cypress CY7C63xxx mirco controller series. It currently supports the pre-programmed CYC63001A-PC by AK Modul-Bus GmbH. It's based on a kernel 2.4 driver (cyport) by Marcus Maul which I ported to kernel 2.6 using sysfs. I intend to support more controllers of this family (and more features) as soon as I get hold of the required IDs etc. Please see the source code's header for more information. Signed-off-by: NOliver Bock <o.bock@fh-wolfenbuettel.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 22 6月, 2006 7 次提交
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由 Oliver Bock 提交于
This is a new driver for the Cypress CY7C63xxx mirco controller series. It currently supports the pre-programmed CYC63001A-PC by AK Modul-Bus GmbH. It's based on a kernel 2.4 driver (cyport) by Marcus Maul which I ported to kernel 2.6 using sysfs. I intend to support more controllers of this family (and more features) as soon as I get hold of the required IDs etc. Please see the source code's header for more information. Signed-off-by: NOliver Bock <o.bock@fh-wolfenbuettel.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 akpm@osdl.org 提交于
This is a driver to control the brightness of an Apple Cinema Display over USB. It updates the local brightness value if the user presses a button on the display. Signed-off-by: NMichael Hanselmann <linux-kernel@hansmi.ch> Cc: Oliver Neukum <oliver@neukum.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as693b) makes the usbtest driver report errors in the isochronous bulk transfer tests instead of always returning 0. As an arbitrary cutoff, an error is returned if more than 10% of the packet transfers fail. It also stops a test immediately upon receiving an URB submission error. For a test harness, it's especially important to report when errors occur! Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Franck Bui-Huu 提交于
ctrl_complete functions acquires ctx->lock and tries to unlink all queued urbs in case of errors through usb_unlink_urb func. In its turn usb_unlink_urb calls, through the hcd driver, usb_hcd_giveback_urb which calls ctrl_complete again. At this time, ctx->lock is already taken by the same function. Signed-off-by: NFranck Bui-Huu <vagabon.xyz@gmail.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sean Young 提交于
Make inputs pollable using sysfs_notify and add support for the Phidget InterfaceKit 0/16/16. Various cleanups. Signed-off-by: NSean Young <sean@mess.org> Signed-off-by: NDaniel Saakes <daniel@saakes.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Adrian Bunk 提交于
This patch contains the following possible cleanups: - make needlessly global functions static - function and struct declarations belong into header files - make SiS_VCLKData const - #if 0 the following unused global functions: - sisusb.c: sisusb_writew() - sisusb.c: sisusb_readw() - sisusb_init.c: SiSUSB_GetModeID() Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Arjan van de Ven 提交于
From: Arjan van de Ven <arjan@infradead.org> Convert the semaphores-used-as-mutex to mutexes in the sisusb video driver; this required manual checking due to the "return as locked" stuff in this driver, but the ->lock semaphore is still used as mutex in the end. Signed-off-by: NArjan van de Ven <arjan@infradead.org> Cc: Thomas Winischhofer <winischhofer.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 13 5月, 2006 1 次提交
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由 Monty 提交于
It's become apparent as machines get faster that the emagic kernel firmware loaders (based on the ezusb loader) have a reset race. a 400MHz TiBook never tripped it, but a 2GHz Pentium M seems to hit it about 30% of the time. The bug is seen as a hung USB box and the kernel error: drivers/usb/misc/emi62.c: emi62_load_firmware - error loading firmware: error = -110 The patch below inserts a delay after deasserting reset to allow the box to settle before a new command is issued. This affects only device startup. Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 15 4月, 2006 1 次提交
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由 David Brownell 提交于
Previously, scatterlist tests didn't write patterned data. Given how many corner cases are addresed by them, this was a significant gap in Linux-USB test coverage. Moreover, when peripherals checked for correct data patterns, false error reports would drown out the true ones. This adds the pattern on the way OUT from the host, so scatterlist tests can now be used to uncover bugs like host TX or peripheral RX paths failing for back-to-back short packets. It's easy enough to get an error there with at least one of the {DMA,PIO}{RX,TX} code paths, or run into hardware races that need to be defended against. Note this patch doesn't add checking for correct data patterns on the way IN from peripherals, just a FIXME for later. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 21 3月, 2006 10 次提交
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由 Eric Sesterhenn 提交于
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Arjan van de Ven 提交于
the patch below converts a bunch of semaphores-used-as-mutex in the USB code to mutexes Signed-off-by: NArjan van de Ven <arjan@infradead.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Pekka Enberg 提交于
This patch removes unnecessary LINUX_VERSION_CODE macro usage from drivers/usb/. Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
this does two things: - use kzalloc where appropriate - correct error return codes in ioctl Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
another one for kzalloc. Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
another for kzalloc. Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
another for kzalloc. Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
another one for kzalloc Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
another for kzalloc. Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Oliver Neukum 提交于
another one for kzalloc. Signed-off-by: NOliver Neukum <oliver@neukum.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 14 2月, 2006 1 次提交
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由 Michael Hund 提交于
Signed-off-by: NMichael Hund <mhund@ld-didactic.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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