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path: root/drivers/usb/image
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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)
2006-09-28USB: microtek usb scanner: Scsi_Cmnd conversionHenrik Kretzschmar
Converts obsolete typedef'd Scsi_Cmnd into struct scsi_cmnd. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: Make file operations structs in drivers/usb const.Luiz Fernando N. Capitulino
Making structs const prevents accidental bugs and with the proper debug options they're protected against corruption. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-06[SCSI] fix up request buffer reference in various scsi driversChristoph Hellwig
Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their queuecommand functions. Those fields are internal storage for the midlayer only and are used to restore the original payload after request_buffer and request_bufflen have been overwritten for EH. Using the buffer and bufflen fields means they do very broken things in error handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-03-24[PATCH] s/;;/;/gAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-20[PATCH] USB: convert a bunch of USB semaphores to mutexesArjan van de Ven
the patch below converts a bunch of semaphores-used-as-mutex in the USB code to mutexes Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] USB: mdc800.c to kzallocOliver Neukum
one more conversion to kzalloc. Signed-off-by: Oliver Neukum <oliver@neukum.name> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-10[PATCH] turn "const static" into "static const"Jesper Juhl
ICC likes to complain about storage class not being first, GCC doesn't care much (except for cases like "inline static"). have a hard time seeing how it could break anything. Thanks to Gabriel A. Devenyi for pointing out http://linuxicc.sourceforge.net/ which is what made me create this patch. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-04[PATCH] USB: remove .owner field from struct usb_driverGreg Kroah-Hartman
It is no longer needed, so let's remove it, saving a bit of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-17[PATCH] USB: Adapt microtek driver to new scsi featuresOliver Neukum
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: Oliver Neukum <oliver@neukum.name> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[SCSI] remove Scsi_Host_Template typedefChristoph Hellwig
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-28[PATCH] mdc800: remove embrions of C++ exceptionsAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] USB: microtek patch to use kzallocOliver Neukum
here is another one to use kzalloc. Please apply. Signed-off-by: Oliver Neukum <oliver@neukum.name> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] devfs: Remove the mode field from usb_class_driver as it's no longer ↵Greg Kroah-Hartman
needed Also fixes all drivers that set this field, and removes some other devfs specfic USB logic. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/usb/class/usblp.c | 3 +-- drivers/usb/core/file.c | 19 ++++--------------- drivers/usb/image/mdc800.c | 3 +-- drivers/usb/input/aiptek.c | 2 +- drivers/usb/input/hiddev.c | 3 +-- drivers/usb/media/dabusb.c | 3 +-- drivers/usb/misc/auerswald.c | 3 +-- drivers/usb/misc/idmouse.c | 5 ++--- drivers/usb/misc/legousbtower.c | 5 ++--- drivers/usb/misc/rio500.c | 3 +-- drivers/usb/misc/sisusbvga/sisusb.c | 5 ----- drivers/usb/misc/usblcd.c | 9 ++++----- drivers/usb/usb-skeleton.c | 3 +-- include/linux/usb.h | 7 ++----- 14 files changed, 22 insertions(+), 51 deletions(-)
2005-07-27[PATCH] clean up inline static vs static inlineJesper Juhl
`gcc -W' likes to complain if the static keyword is not at the beginning of the declaration. This patch fixes all remaining occurrences of "inline static" up with "static inline" in the entire kernel tree (140 occurrences in 47 files). While making this change I came across a few lines with trailing whitespace that I also fixed up, I have also added or removed a blank line or two here and there, but there are no functional changes in the patch. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-03[PATCH] USB: Spelling fixes for drivers/usb.Steven Cole
Here are some spelling corrections for drivers/usb. cancelation -> cancellation succesful -> successful cancelation -> cancellation decriptor -> descriptor Initalize -> Initialize wierd -> weird Protocoll -> Protocol occured -> occurred successfull -> successful Procesing -> Processing devide -> divide Isochronuous -> Isochronous noticable -> noticeable Basicly -> Basically transfering -> transferring intialize -> initialize Incomming -> Incoming additionnal -> additional asume -> assume Unfortunatly -> Unfortunately retreive -> retrieve tranceiver -> transceiver Compatiblity -> Compatibility Incorprated -> Incorporated existance -> existence Ununsual -> Unusual Signed-off-by: Steven Cole <elenstev@mesatop.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-22[PATCH] USB: compilation failure on usb/image/microtek.cHideaki YOSHIFUJI
maybe typo? Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-18[PATCH] kill old EH constants
Fix up two drivers that incorrectly were using the old return values for their new-style EH methods and kill off scsi_obsolete.h that defined the constants. The initio driver has all these constansts defined locally and uses them internally, I'll fix that up some time later. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!