linux/drivers/usb
Joe Lawrence 89140fdaf1 xhci: harden xhci_find_next_ext_cap against device removal
xhci_find_next_ext_cap doesn't check for PCI hotplug removal and may use
the PCI master abort bit pattern (~0) to calculate a new PCI address
offset to read/write.  The has lead to reproducable crashes when testing
surprise removal during device initialization on a Stratus platform, at
least after commit d5ddcdf4d6 ("xhci: rework xhci extended capability
list parsing functions").

The crash is repeatable on a Stratus platform when injecting hardware
faults to induce xHCI host controller hotplug during driver
initialization.  If a PCI read in xhci_find_next_ext_cap returns the
master abort pattern, quirk_usb_handoff_xhci may start using a bogus
ext_cap_offset to start searching more bogus PCI addresses.

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-04 17:00:10 -08:00
..
atm USB: atm: cxacru: fix blank line after declaration 2015-07-22 14:55:22 -07:00
c67x00 c67x00-hcd: use USB_DT_HUB 2015-04-03 19:03:16 +02:00
chipidea Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-01-20 09:45:43 -08:00
class cdc-acm:exclude Samsung phone 04e8:685d 2016-01-24 21:06:21 -08:00
common usb: of: add an api to get dr_mode by the phy node 2015-12-15 09:12:41 -06:00
core usb: hub: do not clear BOS field during reset device 2016-01-24 21:06:21 -08:00
dwc2 usb: dwc2: Fix probe problem on bcm2835 2016-02-03 20:15:49 +02:00
dwc3 usb: dwc3: gadget: set the OTG flag in dwc3 gadget driver. 2016-02-03 23:58:20 +02:00
early
gadget wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
host xhci: harden xhci_find_next_ext_cap against device removal 2016-02-04 17:00:10 -08:00
image scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
isp1760 usb: isp1760: udc: add ep capabilities support 2015-08-04 12:26:55 -05:00
misc USB patches for 4.5-rc1 2016-01-13 09:26:40 -08:00
mon USB: usbmon: remove assignment from IS_ERR argument 2016-01-03 16:55:59 -08:00
musb usb: musb: ux500: Fix NULL pointer dereference at system PM 2016-02-03 20:03:40 +02:00
phy usb: phy: mxs: declare variable with initialized value 2016-02-03 19:57:41 +02:00
renesas_usbhs usb: renesas_usbhs: add fallback compatibility strings 2015-12-16 10:53:51 -06:00
serial USB: option: fix Cinterion AHxx enumeration 2016-01-25 13:32:53 +01:00
storage Merge 4.4-rc5 into usb-next as we want those fixes here for testing 2015-12-13 19:20:27 -08:00
usbip usbip: vhci_hcd: at unlink, return -EIDRM if vhci_rx took the urb 2015-10-04 10:59:03 +01:00
wusbcore wusbcore: rh: use USB_DT_HUB 2015-04-03 19:03:15 +02:00
Kconfig usb: isp1760: Move driver from drivers/usb/host/ to drivers/usb/isp1760/ 2015-01-27 09:39:38 -06:00
Makefile usb-host: Remove fusbh200 driver 2015-10-16 23:44:33 -07:00
README
usb-skeleton.c

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 ("hub_wq").

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.