android_kernel_xiaomi_sm8350/drivers/usb
Daniel Drake 1fbe75e12f [PATCH] USB: print message when device is rejected due to insufficient power
2.6.16 introduces USB power budgeting in the Linux kernel, and since then, a
fair number of users have observed that some of their devices no longer work in
unpowered hubs (this is not a bug, the devices claim that they need more than
100mA).

The very least we can do is print an informational message to the kernel log
when this happens, otherwise it is not at all clear why the device was not
accepted.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21 15:04:14 -07:00
..
atm [PATCH] USBATM: remove no-longer needed #include 2006-06-21 15:04:09 -07:00
class [PATCH] USB: cdc-acm: add a new special case for modems with buggy firmware 2006-06-21 15:04:08 -07:00
core [PATCH] USB: print message when device is rejected due to insufficient power 2006-06-21 15:04:14 -07:00
gadget [PATCH] gadgetfs: fix memory leaks 2006-06-21 15:04:13 -07:00
host [PATCH] improved TT scheduling for EHCI 2006-06-21 15:04:13 -07:00
image [SCSI] fix up request buffer reference in various scsi drivers 2006-06-06 11:07:25 -04:00
input [PATCH] usbhid: automatically set HID_QUIRK_NOGET for keyboards and mice 2006-06-21 15:04:10 -07:00
misc [PATCH] usbtest: report errors in iso tests 2006-06-21 15:04:13 -07:00
mon [PATCH] USB: kzalloc() conversion for rest of drivers/usb 2006-03-20 14:49:59 -08:00
net [PATCH] USB: more pegasus log spamming removed 2006-06-21 15:04:14 -07:00
serial [PATCH] USB: rmmod pl2303 after -28 2006-06-21 15:04:14 -07:00
storage [PATCH] usb-storage: get rid of the timer during URB submission 2006-06-21 15:04:13 -07:00
Kconfig V4L/DVB (3599a): Move drivers/usb/media to drivers/media/video 2006-03-25 09:29:04 -03:00
Makefile V4L/DVB (3599a): Move drivers/usb/media to drivers/media/video 2006-03-25 09:29:04 -03:00
README
usb-skeleton.c [PATCH] USB: remove some left over devfs droppings hanging around in the usb drivers 2006-01-31 17:23:41 -08:00

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.