linux/drivers/usb
Linus Torvalds 6d2fa9e141 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
 "Lots of activity this round on performance improvements in target-core
  while benchmarking the prototype scsi-mq initiator code with
  vhost-scsi fabric ports, along with a number of iscsi/iser-target
  improvements and hardening fixes for exception path cases post v3.10
  merge.

  The highlights include:

   - Make persistent reservations APTPL buffer allocated on-demand, and
     drop per t10_reservation buffer.  (grover)
   - Make virtual LUN=0 a NULLIO device, and skip allocation of NULLIO
     device pages (grover)
   - Add transport_cmd_check_stop write_pending bit to avoid extra
     access of ->t_state_lock is WRITE I/O submission fast-path.  (nab)
   - Drop unnecessary CMD_T_DEV_ACTIVE check from
     transport_lun_remove_cmd to avoid extra access of ->t_state_lock in
     release fast-path.  (nab)
   - Avoid extra t_state_lock access in __target_execute_cmd fast-path
     (nab)
   - Drop unnecessary vhost-scsi wait_for_tasks=true usage +
     ->t_state_lock access in release fast-path.  (nab)
   - Convert vhost-scsi to use modern se_cmd->cmd_kref
     TARGET_SCF_ACK_KREF usage (nab)
   - Add tracepoints for SCSI commands being processed (roland)
   - Refactoring of iscsi-target handling of ISCSI_OP_NOOP +
     ISCSI_OP_TEXT to be transport independent (nab)
   - Add iscsi-target SendTargets=$IQN support for in-band discovery
     (nab)
   - Add iser-target support for in-band discovery (nab + Or)
   - Add iscsi-target demo-mode TPG authentication context support (nab)
   - Fix isert_put_reject payload buffer post (nab)
   - Fix iscsit_add_reject* usage for iser (nab)
   - Fix iscsit_sequence_cmd reject handling for iser (nab)
   - Fix ISCSI_OP_SCSI_TMFUNC handling for iser (nab)
   - Fix session reset bug with RDMA_CM_EVENT_DISCONNECTED (nab)

  The last five iscsi/iser-target items are CC'ed to stable, as they do
  address issues present in v3.10 code.  They are certainly larger than
  I'd like for stable patch set, but are important to ensure proper
  REJECT exception handling in iser-target for 3.10.y"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (51 commits)
  iser-target: Ignore non TEXT + LOGOUT opcodes for discovery
  target: make queue_tm_rsp() return void
  target: remove unused codes from enum tcm_tmrsp_table
  iscsi-target: kstrtou* configfs attribute parameter cleanups
  iscsi-target: Fix tfc_tpg_auth_cit configfs length overflow
  iscsi-target: Fix tfc_tpg_nacl_auth_cit configfs length overflow
  iser-target: Add support for ISCSI_OP_TEXT opcode + payload handling
  iser-target: Rename sense_buf_[dma,len] to pdu_[dma,len]
  iser-target: Add vendor_err debug output
  target: Add (obsolete) checking for PMI/LBA fields in READ CAPACITY(10)
  target: Return correct sense data for IO past the end of a device
  target: Add tracepoints for SCSI commands being processed
  iser-target: Fix session reset bug with RDMA_CM_EVENT_DISCONNECTED
  iscsi-target: Fix ISCSI_OP_SCSI_TMFUNC handling for iser
  iscsi-target: Fix iscsit_sequence_cmd reject handling for iser
  iscsi-target: Fix iscsit_add_reject* usage for iser
  iser-target: Fix isert_put_reject payload buffer post
  iscsi-target: missing kfree() on error path
  iscsi-target: Drop left-over iscsi_conn->bad_hdr
  target: Make core_scsi3_update_and_write_aptpl return sense_reason_t
  ...
2013-07-11 12:57:19 -07:00
..
atm drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
c67x00 usb: c67x00 RetryCnt value in c67x00 TD should be 3 2013-03-07 12:31:37 +08:00
chipidea Device tree updates for v3.11 2013-07-04 15:51:45 -07:00
class USB: cdc-acm: remove unneeded spin_lock_irqsave/restore on write path 2013-06-17 13:37:07 -07:00
core Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
dwc3 usb: patches for v3.11 merge window 2013-06-12 14:44:13 -07:00
early
gadget Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-07-11 12:57:19 -07:00
host ARM SoC specific changes 2013-07-02 13:43:38 -07:00
image USB: regroup all depends on USB within an if USB block 2013-04-09 16:49:07 -07:00
misc Merge branch 'exotic-arch-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k 2013-07-03 11:12:08 -07:00
mon USB: regroup all depends on USB within an if USB block 2013-04-09 16:49:07 -07:00
musb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
phy For the 3.11 merge we only have one new MFD driver for the Kontron PLD. 2013-07-10 11:10:27 -07:00
renesas_usbhs USB: regroup all depends on USB within an if USB block 2013-04-09 16:49:07 -07:00
serial USB: option,qcserial: move Novatel Gobi1K IDs to qcserial 2013-06-24 16:21:53 -07:00
storage Merge 3.10-rc3 into usb-next 2013-05-27 11:00:52 +09:00
wusbcore USB: HWA: fix device probe failure 2013-06-24 16:20:43 -07:00
Kconfig USB: Check for ARCH_EXYNOS separately 2013-06-19 01:25:48 +09:00
Makefile usb host: Faraday USB2.0 FUSBH200-HCD driver 2013-05-17 10:12:52 -07:00
README
usb-common.c usb: add devicetree helpers for determining dr_mode and phy_type 2013-06-17 13:47:09 -07:00
usb-skeleton.c USB: usb-skeleton.c: fix blocked forever in skel_read 2013-03-25 13:32:20 -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.