[PATCH v6 0/4] LED triggers for USB host and device

[Michal Sojka]

This adds LED triggers for USB host and device. First two patches
refactor UDC drivers as requested by Felipe Balbi, the next renames a
file and the last is the actual implementation of the LED triggers.

Changes from v5:
- Refactoring of USB gadget completion split into two patches (Filipe
  Balbi)
- Removed check for non-NULL req->completion (Filipe Balbi)

Changes from v4:
- Added performance numbers to the commit message of the last patch
  (greg k-h).
- Replaced BUG_ON with pr_err (Alan Stern, greg k-h).
- Used proper coding style for switch statement (greg k-h).
- Added comment about NULL argument (greg k-h).
- EXPORT_SYMBOL changed to EXPORT_SYMBOL_GPL (greg k-h).
- Both triggers are now registerd even if host or gagdet subsystem
  is not enabled (Bryan Wu, greg k-h).

Changes from v3:
- usb_gadget_giveback_request() moved outside of CONFIG_HAS_DMA
  conditioned block.
- Added kernel-doc for usb_gadget_giveback_request() (Felipe Balbi).
- Removed outdated comment (Alan Stern).
- req->complete == NULL is now a bug. Previously, this was ignored
  (Alan Stern).
- File rename moved to a separate commit (greg k-h).

Changes from v2:
- Host/gadget triggers merged to a single file in usb/common/ (Felipe
  Balbi).
- UDC drivers refactored so that LED trigger works for all of them.

Changes from v1:
- Moved from drivers/leds/ to drivers/usb/.
- Improved Kconfig help.
- Linked with other modules rather than being standalone modules.

Michal Sojka (4):
  usb: gadget: Introduce usb_gadget_giveback_request()
  usb: gadget: Refactor request completion
  usb: Rename usb-common.c
  usb: Add LED triggers for USB activity

 drivers/usb/Kconfig                     |  10 +++
 drivers/usb/chipidea/udc.c              |   6 +-
 drivers/usb/common/Makefile             |   5 +-
 drivers/usb/common/common.c             | 144 ++++++++++++++++++++++++++++++++
 drivers/usb/common/led.c                |  57 +++++++++++++
 drivers/usb/common/usb-common.c         | 144 --------------------------------
 drivers/usb/core/hcd.c                  |   2 +
 drivers/usb/dwc2/gadget.c               |   6 +-
 drivers/usb/dwc3/gadget.c               |   2 +-
 drivers/usb/gadget/udc/amd5536udc.c     |   2 +-
 drivers/usb/gadget/udc/at91_udc.c       |   2 +-
 drivers/usb/gadget/udc/atmel_usba_udc.c |   4 +-
 drivers/usb/gadget/udc/bcm63xx_udc.c    |   2 +-
 drivers/usb/gadget/udc/dummy_hcd.c      |  10 +--
 drivers/usb/gadget/udc/fotg210-udc.c    |   2 +-
 drivers/usb/gadget/udc/fsl_qe_udc.c     |   6 +-
 drivers/usb/gadget/udc/fsl_udc_core.c   |   6 +-
 drivers/usb/gadget/udc/fusb300_udc.c    |   2 +-
 drivers/usb/gadget/udc/goku_udc.c       |   2 +-
 drivers/usb/gadget/udc/gr_udc.c         |   2 +-
 drivers/usb/gadget/udc/lpc32xx_udc.c    |   2 +-
 drivers/usb/gadget/udc/m66592-udc.c     |   2 +-
 drivers/usb/gadget/udc/mv_u3d_core.c    |   8 +-
 drivers/usb/gadget/udc/mv_udc_core.c    |   8 +-
 drivers/usb/gadget/udc/net2272.c        |   2 +-
 drivers/usb/gadget/udc/net2280.c        |   2 +-
 drivers/usb/gadget/udc/omap_udc.c       |   2 +-
 drivers/usb/gadget/udc/pch_udc.c        |   2 +-
 drivers/usb/gadget/udc/pxa25x_udc.c     |   2 +-
 drivers/usb/gadget/udc/pxa27x_udc.c     |   2 +-
 drivers/usb/gadget/udc/r8a66597-udc.c   |   2 +-
 drivers/usb/gadget/udc/s3c-hsudc.c      |   3 +-
 drivers/usb/gadget/udc/s3c2410_udc.c    |   2 +-
 drivers/usb/gadget/udc/udc-core.c       |  20 +++++
 drivers/usb/musb/musb_gadget.c          |   2 +-
 drivers/usb/renesas_usbhs/mod_gadget.c  |   2 +-
 include/linux/usb.h                     |  12 +++
 include/linux/usb/gadget.h              |   8 ++
 38 files changed, 298 insertions(+), 201 deletions(-)
 create mode 100644 drivers/usb/common/common.c
 create mode 100644 drivers/usb/common/led.c
 delete mode 100644 drivers/usb/common/usb-common.c

-- 
2.1.0

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