- 12 Jul, 2007 40 commits
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David Brownell authored
This patch removes controller driver infrastructure which supported the now-removed usb_ep_{alloc,free}_buffer() calls. As can be seen, many of the implementations of this were broken to various degrees. Many didn't properly return dma-coherent mappings; those which did so were necessarily ugly because of bogosity in the underlying dma_free_coherent() calls ... which on many platforms can't be called from the same contexts (notably in_irq) from which their dma_alloc_coherent() sibling can be called. The main potential downside of removing this is that gadget drivers wouldn't have specific knowledge that the controller drivers have: endpoints that aren't dma-capable don't need any dma mappings at all. Signed-off-by:David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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David Brownell authored
Remove usb_ep_{alloc,free}_buffer() calls, for small dma-coherent buffers. This patch just removes the interface and its users; later patches will remove controller driver support. - This interface is invariably not implemented correctly in the controller drivers (e.g. using dma pools, a mechanism which post-dates the interface by several years). - At this point no gadget driver really *needs* to use it. In current kernels, any driver that needs such a mechanism could allocate a dma pool themselves. Removing this interface is thus a simplification and improvement. Note that the gmidi.c driver had a bug in this area; fixed. Signed-off-by: -
David Brownell authored
Cleanups to the pxa2xx_udc code: - Primarily removing unused DMA hooks. - One "sparse" warning removed - Remove some Lubbock-only LED hooks (for debugging) That DMA code was never really completed. It worked, mostly, for IN transfers (to the host) if they were fortuitously aligned, but that code was never fully tested. And it was never coded for OUT transfers (which is where DMA would really help) ... because of chip errata on essentially every chip other than the pxa255, and because of design botches (nothing automated data toggle). So it's effectively been dead code for several years now ... no point in keeping it around. Signed-off-by:
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Milan Svoboda authored
This patch lets the pxa2xx_udc use the generic gpio layer, on the relevant PXA and IXP systems. Signed-off-by:
Milan Svoboda <msvoboda@ra.rockwell.com> Signed-off-by:
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Oliver Neukum authored
this printer does not survive suspension. Signed-off-by:
Oliver Neukum <oneukum@suse.de> Signed-off-by:
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David Brownell authored
This patch updates some of the documentation about DMA buffer management for USB, and ways to avoid extra copying. Our understanding of the issues has improved over time. - Most drivers should *avoid* the dma-coherent allocators. There are a few exceptions (like the HID driver). - Some methods are currently commented out; it seems folk writing USB drivers aren't doing performance tuning at that level yet. - Just avoid highmem; there's no good way to pass an "I can do highmem DMA" capability through a driver stack. This is easy, everything already avoids highmem. But it'd be nice if x86_32 systems with much physical memory could use it directly with network adapters and mass storage devices. (Patch, anyone?) Signed-off-by:
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S.Caglar Onur authored
Following patch removes trailing whitespaces at the ends of lines and converts smarttabs/whitespaces into real tabs. Signed-off-by:
S.Caglar Onur <caglar@pardus.org.tr> Signed-off-by:
Phil Dibowitz <phil@ipom.com> Signed-off-by:
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Robert P. J. Day authored
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Robert P. J. Day <rpjday@mindspring.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Alan Cox authored
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Alan Cox <alan@redhat.com> Signed-off-by:
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Alan Cox authored
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Alan Cox authored
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Alan Cox authored
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Alan Cox authored
The MOS driver is "interesting", in a bad kind of 'how the hell did this get merged' kind of way - Remove the bogus termios change check - Remove the duplicate code for half the ioctls - Remove the supporting code to duplicate the ioctl code Signed-off-by:
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Yinghai Lu authored
So we can use dev_to_node(&usb_dev->dev) later in kmalloc_node to dma buffer Signed-off-by:
Yinghai Lu <yinghai.lu@sun.com> Cc: Andi Kleen <ak@suse.de> Acked-by:
Christoph Lameter <clameter@sgi.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by:
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Oliver Neukum authored
Fix an oops that happens in relation with applying work arounds for buggy ftdi_sio devices. The quirks were handled too early because due to changes in the initialisation of usb serial devices the device was not fully initialised when the old hook was called. Addresses bug 8564 Cc: <stable@kernel.org> Signed-off-by:
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Matthias Kaehlcke authored
Low performance USB storage driver: Use list_for_each_entry() instead of list_for_each() Signed-off-by:
Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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Jan Engelhardt authored
Generally, Jens Axboe was against 'default y', so I'll have some patches to remove it. Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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Venki Pallipadi authored
Make usb autosuspend timers 1sec jiffy aligned. This helps to reduce the frequency at which the CPU must be taken out of a lower-power state. Signed-off-by:
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by:
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Jeremy Katz authored
Blackberry devices charge over USB. By autosuspending the port, they are not able to charge reliably. Signed-off-by:
Jeremy Katz <katzj@redhat.com> Signed-off-by:
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Jeremy Katz authored
The Blackberry Pearl (8100) needs similar tweaks as older Blackberry models to be able to charge when connected via USB. The Pearl also adds an additional need to go into a separate mode for fully accessing the device; do that by default as well. Changes based on the changes from bcharge in the barry project (http://barry.sf.net) Signed-off-by:
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Craig W. Nadler authored
USB_IAD: Adds support for USB Interface Association Descriptors. This patch adds support to the USB host stack for parsing, storing, and displaying Interface Association Descriptors. In /proc/bus/usb/devices lines starting with A: show the fields in an IAD. In sysfs if an interface on a USB device is referenced by an IAD the following files will be added to the sysfs directory for that interface: iad_bFirstInterface, iad_bInterfaceCount, iad_bFunctionClass, and iad_bFunctionSubClass, iad_bFunctionProtocol Signed-off-by:
Craig W. Nadler <craig@nadler.us> Signed-off-by:
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Greg Kroah-Hartman authored
Update the original developer's email addresses at their request. Cc: Vijaya Kumar <vijaykumar.gn@gmail.com> Cc: Ajay Kumar <naanuajay@yahoo.com> Cc: Gurudeva <ngurudeva@yahoo.com> Signed-off-by: -
Alan Stern authored
The loop in usb_sg_wait() is structured in a way that makes it hard to tell, when the loop exits, whether or not the last URB submission succeeded. This patch (as928) changes it from a "for" loop to a "while" loop and keeps "i" always equal to the number of successful submissions. This fixes an off-by-one error which can show up when the first URB submission fails. The patch also removes a couple of lines that initialize fields which don't need to be initialized. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Alan Stern authored
Root hubs can't be resumed if their parent controller device is still suspended. This patch (as925) adds a check for that condition in hcd_bus_resume() and prevents it from being treated as a fatal controller failure. ehci-hcd is updated to add the corresponding test. Unnecessary debugging messages are removed from uhci-hcd and dummy-hcd. The error return code from dummy-hcd is changed to -ESHUTDOWN, the same as the others. ohci-hcd doesn't need any changes. Suspend handling in the non-PCI host drivers is somewhat hit-and-miss. This patch shouldn't have any effect on them. Signed-off-by:
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Alan Stern authored
This patch (as922) removes all but one of the remaining vestiges of dev->power.power_state from usbcore. The only usage left must remain until the deprecated "power/state" sysfs attribute is gone. Signed-off-by:
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Pete Zaitcev authored
This patch's main bulk aims to make usblp the premier driver for code pillaging once again. The code is as streamlined as possible and is bug-free as possible. The usb-skeleton performs the same function, but is somewhat abstract. The usblp is usb-skeleton which is actually used by many. Since I combed a few small bugs away, this also fixes the small races we had in usblp for a while. For example, now it's possible for several threads to make write(2) calls (sounds silly, but consider a printer for paper record, where every line of text is self-contained and thus it's all right to have them interleaved). Also gone are issues with interrupts using barriers dangerously. This patch makes use of Oliver's anchor, and so it must trail the anchor patch on the way to Linus. Signed-off-by:
Pete Zaitcev <zaitcev@redhat.com> Signed-off-by:
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Pete Zaitcev authored
Vojtech agreed to pass usblp over to me, so if you find bugs don't bug him. Signed-off-by:
Vojtech Pavlik <vojtech@suse.cz> Signed-off-by:
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Li Yang authored
Fix a bug that PORT_TYPE and PORT_WIDTH aren't masked correctly in portsc. Signed-off-by:
Christopher Cason <chris.cason@nec.com.au> Signed-off-by:
Li Yang <leoli@freescale.com> Signed-off-by:
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Oliver Neukum authored
this patch implements autosuspend for the usblcd driver. It uses the new usb_anchor infrastructure. Many thanks to Georges for testing. Signed-off-by:
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Haavard Skinnemoen authored
husb2dev was the internal name of the USB Device Controller on AT32AP7000. Rename it to "atmel_usba", which is closer to the official name used in documentation and marketing material. Signed-off-by:
Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by:
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Marcel Holtmann authored
USB: Add URB_FREE_BUFFER flag for freeing the transfer buffer In some cases it is not needed that the driver keeps track of the transfer buffer of an URB. It can be simply freed along with the URB itself when the reference count goes down to zero. The new flag URB_FREE_BUFFER enables this behavior. Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Laurent Pinchart authored
Many device manufacturers are using full-speed bInterval values in high-speed interrupt endpoint descriptors. If the bInterval value is greater than 16, assume the device uses full-speed descriptors and fix the value accordingly. Signed-off-by:
Laurent Pinchart <laurent.pinchart@skynet.be> Acked-by:
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Oliver Neukum authored
use anchors in pre/post_reset Signed-off-by:
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Oliver Neukum authored
use anchors in suspend/resume handling Signed-off-by:
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Oliver Neukum authored
use anchors in disconnect handling Signed-off-by:
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Alan Cox authored
- Drivers don't call ldisc termios methods. They certainly don't call them the way this one does - remove wrong call - The tty buffer code isn't designed to be abused from IRQ handlers and the new buffering removes the need for the uglies involved - fix them - Style - Remove incorrect baud and change handling for termios changes The driver now has some style, but not a lot - it goes insane if you have two dongles for example as it continues to use global variables for per dongle state. That bit isn't my problem. Signed-off-by:
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Alan Cox authored
Use the baud rate stuff from the kernel don't parse CBAUD directly Remove pointless and wrong 'no change' check Could do with some good testing as well but again better than adding && BROKEN (The use of BELKIN_SA_BAUD() might seem a bit odd but x/a = b and x/b = a (rounded for integers)). Signed-off-by:
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Alan Cox authored
o Don't parse the cflag for baud rates, its not valid to do so any more and this driver got it wrong anyway o Don't do clever termios change checks in drivers and get them wrong (arguably we should do some smart ones in the tty core but stty to change nothing is *not* a common or critical path I don't have the hardware so if you can test this carefully please do. I thought fixing it up this far was better than marking it and other bits of USB serial && BROKEN Signed-off-by:
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Greg Kroah-Hartman authored
This removes the ugly code that was copied from the keyspan driver and allocates the in urbs in a much shorter code path that can be understood easier. Also turned off the interrupt urb when no port was open as it's not nice to keep the bus busy for no good reason at all (this should be a power savings.) All in all, this saved over 40 lines of code and cleaned things up better. Cc: Kevin Lloyd <linux@sierrawireless.com> Signed-off-by: -
Greg Kroah-Hartman authored
You can't rely on the fact that the status really is correct like it was. Also simplified the write path and now we allocate the urb and data on the fly, instead of trying to do that really odd timeout check which I am guessing doesn't really work properly. This should speed up the device by keeping the hardware queue full easier. As a benefit, this reduces the size of the driver. Cc: Kevin Lloyd <linux@sierrawireless.com> Signed-off-by:
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