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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 21:54:06 +08:00
linux-next/drivers/usb
Sarah Sharp 0de13500ad Revert "xHCI: reset-on-resume quirk for NEC uPD720200"
This reverts commit df711fc996.

The commit added a reset-on-resume quirk because the NEC chipset stopped
responding to commands about 30 minutes after a system resume from
suspend.  We thought it was a chipset issue, but it turns out that the
xHCI driver was zeroing out the link TRB after a successful context
restore during resume.  The host controller would fall off the command
ring sometime later, causing it to not respond to new commands.

The link TRB issue has been fixed with commit
158886cd2c "xHCI: fix bug in
xhci_clear_command_ring()", so revert the reset-on-resume quirk, as it's
not necessary.

Commit df711fc996 was marked for stable
trees back to 2.6.37, but according to my mail, it has not made it into
Linus' tree or the stable trees yet.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Julian Sikorski <belegdol@gmail.com>
Cc: Andiry Xu <andiry.xu@amd.com>
2011-12-01 10:41:40 -08:00
..
atm drivers: usb: atm: ueagle-atm: Add missing const qualifier 2011-07-08 14:51:30 -07:00
c67x00 usb: Add module.h to drivers/usb consumers who really use it. 2011-10-31 19:31:25 -04:00
class USB: cdc-acm: Fix disconnect() vs close() race 2011-11-14 13:47:49 -08:00
core USB: quirks: adding more quirky webcams to avoid squeaky audio 2011-11-14 16:39:17 -08:00
dwc3 usb: dwc3: gadget: initialize max_streams 2011-11-14 11:51:31 -08:00
early USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
gadget usb: gadget: fsl_udc: fix dequeuing a request in progress 2011-11-29 23:19:04 +09:00
host Revert "xHCI: reset-on-resume quirk for NEC uPD720200" 2011-12-01 10:41:40 -08:00
image atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
misc usb: Provide usb_speed_string() function 2011-09-18 01:29:04 -07:00
mon usb: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:25 -04:00
musb usb: udc: Fix gadget driver's speed check in various UDC drivers 2011-11-29 23:19:04 +09:00
otg usb: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:25 -04:00
renesas_usbhs usb: renesas_usbhs: fixup driver speed 2011-11-29 23:19:03 +09:00
serial usb: option: add SIMCom SIM5218 2011-11-26 19:56:47 -08:00
storage USB: usb-storage: unusual_devs entry for Kingston DT 101 G2 2011-11-26 19:56:47 -08:00
wusbcore usb: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:25 -04:00
Kconfig Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2011-11-03 13:28:14 -07:00
Makefile usb: Provide usb_speed_string() function 2011-09-18 01:29:04 -07:00
README
usb-common.c usb: Provide usb_speed_string() function 2011-09-18 01:29:04 -07:00
usb-skeleton.c USB: use usb_endpoint_maxp() instead of le16_to_cpu() 2011-08-23 09:47:40 -07:00

To understand all the Linux-USB framework, you'll use these resources:

    * This source code.  This is necessarily an evolving work, and
      includes kerneldoc that should help you get a current overview.
      ("make pdfdocs", and then look at "usb.pdf" for host side and
      "gadget.pdf" for peripheral side.)  Also, Documentation/usb has
      more information.

    * The USB 2.0 specification (from www.usb.org), with supplements
      such as those for USB OTG and the various device classes.
      The USB specification has a good overview chapter, and USB
      peripherals conform to the widely known "Chapter 9".

    * Chip specifications for USB controllers.  Examples include
      host controllers (on PCs, servers, and more); peripheral
      controllers (in devices with Linux firmware, like printers or
      cell phones); and hard-wired peripherals like Ethernet adapters.

    * Specifications for other protocols implemented by USB peripheral
      functions.  Some are vendor-specific; others are vendor-neutral
      but just standardized outside of the www.usb.org team.

Here is a list of what each subdirectory here is, and what is contained in
them.

core/		- This is for the core USB host code, including the
		  usbfs files and the hub class driver ("khubd").

host/		- This is for USB host controller drivers.  This
		  includes UHCI, OHCI, EHCI, and others that might
		  be used with more specialized "embedded" systems.

gadget/		- This is for USB peripheral controller drivers and
		  the various gadget drivers which talk to them.


Individual USB driver directories.  A new driver should be added to the
first subdirectory in the list below that it fits into.

image/		- This is for still image drivers, like scanners or
		  digital cameras.
../input/	- This is for any driver that uses the input subsystem,
		  like keyboard, mice, touchscreens, tablets, etc.
../media/	- This is for multimedia drivers, like video cameras,
		  radios, and any other drivers that talk to the v4l
		  subsystem.
../net/		- This is for network drivers.
serial/		- This is for USB to serial drivers.
storage/	- This is for USB mass-storage drivers.
class/		- This is for all USB device drivers that do not fit
		  into any of the above categories, and work for a range
		  of USB Class specified devices. 
misc/		- This is for all USB device drivers that do not fit
		  into any of the above categories.