Commit Graph

15190 Commits

Author SHA1 Message Date
Christoph Hellwig
0e77acef8e dma: remove external references to dma_supported
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Linus Torvalds
ad804a0b2a Merge branch 'akpm' (patches from Andrew)
Merge second patch-bomb from Andrew Morton:

 - most of the rest of MM

 - procfs

 - lib/ updates

 - printk updates

 - bitops infrastructure tweaks

 - checkpatch updates

 - nilfs2 update

 - signals

 - various other misc bits: coredump, seqfile, kexec, pidns, zlib, ipc,
   dma-debug, dma-mapping, ...

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits)
  ipc,msg: drop dst nil validation in copy_msg
  include/linux/zutil.h: fix usage example of zlib_adler32()
  panic: release stale console lock to always get the logbuf printed out
  dma-debug: check nents in dma_sync_sg*
  dma-mapping: tidy up dma_parms default handling
  pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode
  kexec: use file name as the output message prefix
  fs, seqfile: always allow oom killer
  seq_file: reuse string_escape_str()
  fs/seq_file: use seq_* helpers in seq_hex_dump()
  coredump: change zap_threads() and zap_process() to use for_each_thread()
  coredump: ensure all coredumping tasks have SIGNAL_GROUP_COREDUMP
  signal: remove jffs2_garbage_collect_thread()->allow_signal(SIGCONT)
  signal: introduce kernel_signal_stop() to fix jffs2_garbage_collect_thread()
  signal: turn dequeue_signal_lock() into kernel_dequeue_signal()
  signals: kill block_all_signals() and unblock_all_signals()
  nilfs2: fix gcc uninitialized-variable warnings in powerpc build
  nilfs2: fix gcc unused-but-set-variable warnings
  MAINTAINERS: nilfs2: add header file for tracing
  nilfs2: add tracepoints for analyzing reading and writing metadata files
  ...
2015-11-07 14:32:45 -08:00
Oleg Nesterov
be0e6f290f signal: turn dequeue_signal_lock() into kernel_dequeue_signal()
1. Rename dequeue_signal_lock() to kernel_dequeue_signal(). This
   matches another "for kthreads only" kernel_sigaction() helper.

2. Remove the "tsk" and "mask" arguments, they are always current
   and current->blocked. And it is simply wrong if tsk != current.

3. We could also remove the 3rd "siginfo_t *info" arg but it looks
   potentially useful. However we can simplify the callers if we
   change kernel_dequeue_signal() to accept info => NULL.

4. Remove _irqsave, it is never called from atomic context.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06 17:50:42 -08:00
Mel Gorman
d0164adc89 mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
__GFP_WAIT has been used to identify atomic context in callers that hold
spinlocks or are in interrupts.  They are expected to be high priority and
have access one of two watermarks lower than "min" which can be referred
to as the "atomic reserve".  __GFP_HIGH users get access to the first
lower watermark and can be called the "high priority reserve".

Over time, callers had a requirement to not block when fallback options
were available.  Some have abused __GFP_WAIT leading to a situation where
an optimisitic allocation with a fallback option can access atomic
reserves.

This patch uses __GFP_ATOMIC to identify callers that are truely atomic,
cannot sleep and have no alternative.  High priority users continue to use
__GFP_HIGH.  __GFP_DIRECT_RECLAIM identifies callers that can sleep and
are willing to enter direct reclaim.  __GFP_KSWAPD_RECLAIM to identify
callers that want to wake kswapd for background reclaim.  __GFP_WAIT is
redefined as a caller that is willing to enter direct reclaim and wake
kswapd for background reclaim.

This patch then converts a number of sites

o __GFP_ATOMIC is used by callers that are high priority and have memory
  pools for those requests. GFP_ATOMIC uses this flag.

o Callers that have a limited mempool to guarantee forward progress clear
  __GFP_DIRECT_RECLAIM but keep __GFP_KSWAPD_RECLAIM. bio allocations fall
  into this category where kswapd will still be woken but atomic reserves
  are not used as there is a one-entry mempool to guarantee progress.

o Callers that are checking if they are non-blocking should use the
  helper gfpflags_allow_blocking() where possible. This is because
  checking for __GFP_WAIT as was done historically now can trigger false
  positives. Some exceptions like dm-crypt.c exist where the code intent
  is clearer if __GFP_DIRECT_RECLAIM is used instead of the helper due to
  flag manipulations.

o Callers that built their own GFP flags instead of starting with GFP_KERNEL
  and friends now also need to specify __GFP_KSWAPD_RECLAIM.

The first key hazard to watch out for is callers that removed __GFP_WAIT
and was depending on access to atomic reserves for inconspicuous reasons.
In some cases it may be appropriate for them to use __GFP_HIGH.

The second key hazard is callers that assembled their own combination of
GFP flags instead of starting with something like GFP_KERNEL.  They may
now wish to specify __GFP_KSWAPD_RECLAIM.  It's almost certainly harmless
if it's missed in most cases as other activity will wake kswapd.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06 17:50:42 -08:00
Linus Torvalds
9cf5c095b6 asm-generic cleanups
The asm-generic changes for 4.4 are mostly a series from Christoph Hellwig
 to clean up various abuses of headers in there. The patch to rename the
 io-64-nonatomic-*.h headers caused some conflicts with new users, so I
 added a workaround that we can remove in the next merge window.
 
 The only other patch is a warning fix from Marek Vasut
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanups from Arnd Bergmann:
 "The asm-generic changes for 4.4 are mostly a series from Christoph
  Hellwig to clean up various abuses of headers in there.  The patch to
  rename the io-64-nonatomic-*.h headers caused some conflicts with new
  users, so I added a workaround that we can remove in the next merge
  window.

  The only other patch is a warning fix from Marek Vasut"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: temporarily add back asm-generic/io-64-nonatomic*.h
  asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations
  gpio-mxc: stop including <asm-generic/bug>
  n_tracesink: stop including <asm-generic/bug>
  n_tracerouter: stop including <asm-generic/bug>
  mlx5: stop including <asm-generic/kmap_types.h>
  hifn_795x: stop including <asm-generic/kmap_types.h>
  drbd: stop including <asm-generic/kmap_types.h>
  move count_zeroes.h out of asm-generic
  move io-64-nonatomic*.h out of asm-generic
2015-11-06 14:22:15 -08:00
Linus Torvalds
75f5db39ff spi: Updates for v4.4
Quite a lot of activity in SPI this cycle, almost all of it in drivers
 with a few minor improvements and tweaks in the core.
 
  - Updates to pxa2xx to support Intel Broxton and multiple chip selects.
  - Support for big endian in the bcm63xx driver.
  - Multiple slave support for the mt8173
  - New driver for the auxiliary SPI controller in bcm2835 SoCs.
  - Support for Layerscale SoCs in the Freescale DSPI driver.
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Merge tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Quite a lot of activity in SPI this cycle, almost all of it in drivers
  with a few minor improvements and tweaks in the core.

   - Updates to pxa2xx to support Intel Broxton and multiple chip selects.
   - Support for big endian in the bcm63xx driver.
   - Multiple slave support for the mt8173
   - New driver for the auxiliary SPI controller in bcm2835 SoCs.
   - Support for Layerscale SoCs in the Freescale DSPI driver"

* tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (87 commits)
  spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI
  spi: pxa2xx: Add support for Intel Broxton
  spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals
  spi: pxa2xx: Add output control for multiple Intel LPSS chip selects
  spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific
  spi: Add DSPI support for layerscape family
  spi: ti-qspi: improve ->remove() callback
  spi/spi-xilinx: Fix race condition on last word read
  spi: Drop owner assignment from spi_drivers
  spi: Add THIS_MODULE to spi_driver in SPI core
  spi: Setup the master controller driver before setting the chipselect
  spi: dw: replace magic constant by DW_SPI_DR
  spi: mediatek: mt8173 spi multiple devices support
  spi: mediatek: handle controller_data in mtk_spi_setup
  spi: mediatek: remove mtk_spi_config
  spi: mediatek: Update document devicetree bindings to support multiple devices
  spi: fix kernel-doc warnings about missing return desc in spi.c
  spi: fix kernel-doc warnings about missing return desc in spi.h
  spi: pxa2xx: Align a few defines
  spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select
  ...
2015-11-05 13:15:12 -08:00
Linus Torvalds
b037865754 media updates for v4.4-rc1
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Merge tag 'media/v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "Media updates, including:

   - Lots of improvements at the kABI documentation
   - Split of Videobuf2 into a common part and a V4L2 specific one
   - Split of the VB2 tracing events into a separate header file
   - s5p-mfc got support for Exynos 5433
   - v4l2 fixes for 64-bits alignment when running 32 bits userspace
     on ARM
   - Added support for SDR radio transmitter at core, vivid and hackrf
     drivers
   - Some y2038 fixups
   - Some improvements at V4L2 colorspace support
   - saa7164 converted to use the V4L2 core control framework
   - several new boards additions, cleanups and fixups

  PS: There are two patches for scripts/kernel-doc that are needed by
  the documentation patches on Media.  Jon is OK on merging those via
  my tree"

* tag 'media/v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (146 commits)
  [media] c8sectpfe: Remove select on CONFIG_FW_LOADER_USER_HELPER_FALLBACK
  [media] DocBook media: update copyright/version numbers
  [media] ivtv: Convert to get_user_pages_unlocked()
  [media] media/v4l2-ctrls: fix setting autocluster to manual with VIDIOC_S_CTRL
  [media] DocBook media: Fix a typo in encoder cmd
  [media] DocBook: add SDR specific info to G_MODULATOR / S_MODULATOR
  [media] DocBook: add SDR specific info to G_TUNER / S_TUNER
  [media] hackrf: do not set human readable name for formats
  [media] hackrf: add support for transmitter
  [media] hackrf: switch to single function which configures everything
  [media] hackrf: add control for RF amplifier
  [media] DocBook: add modulator type field
  [media] v4l: add type field to v4l2_modulator struct
  [media] DocBook: document SDR transmitter
  [media] v4l2: add support for SDR transmitter
  [media] DocBook: document tuner RF gain control
  [media] v4l2: add RF gain control
  [media] v4l2: rename V4L2_TUNER_ADC to V4L2_TUNER_SDR
  [media] media/vivid-osd: fix info leak in ioctl
  [media] media: videobuf2: Move v4l2-specific stuff to videobuf2-v4l2
  ...
2015-11-05 12:05:15 -08:00
Linus Torvalds
fd0d351de7 TTY/Serial driver patches for 4.4-rc1
Here is the big tty and serial driver update for 4.4-rc1.
 
 Lots of serial driver updates and a few small tty core changes.  Full
 details in the shortlog.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the big tty and serial driver update for 4.4-rc1.

  Lots of serial driver updates and a few small tty core changes.  Full
  details in the shortlog.

  All of these have been in linux-next for a while"

* tag 'tty-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (148 commits)
  tty: Use unbound workqueue for all input workers
  tty: Abstract tty buffer work
  tty: Prevent tty teardown during tty_write_message()
  tty: core: Use correct spinlock flavor in tiocspgrp()
  tty: Combine SIGTTOU/SIGTTIN handling
  serial: amba-pl011: fix incorrect integer size in pl011_fifo_to_tty()
  ttyFDC: Fix build problems due to use of module_{init,exit}
  tty: remove unneeded return statement
  serial: 8250_mid: add support for DMA engine handling from UART MMIO
  dmaengine: hsu: remove platform data
  dmaengine: hsu: introduce stubs for the exported functions
  dmaengine: hsu: make the UART driver in control of selecting this driver
  serial: fix mctrl helper functions
  serial: 8250_pci: Intel MID UART support to its own driver
  serial: fsl_lpuart: add earlycon support
  tty: disable unbind for old 74xx based serial/mpsc console port
  serial: pl011: Spelling s/clocks-names/clock-names/
  n_tty: Remove reader wakeups for TTY_BREAK/TTY_PARITY chars
  tty: synclink, fix indentation
  serial: at91, fix rs485 properties
  ...
2015-11-04 21:35:12 -08:00
Linus Torvalds
3d6f47801c USB patches for 4.4-rc1
Here is the big USB patchset for 4.4-rc1.
 
 As usual, most of the changes are in the gadget subsystem, and we
 removed a host controller for a device that is no longer in existance,
 and probably never was even made public.  There is also other minor
 driver updates and new device ids, full details in the changelog.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB updates from Greg KH:
 "Here is the big USB patchset for 4.4-rc1.

  As usual, most of the changes are in the gadget subsystem, and we
  removed a host controller for a device that is no longer in existance,
  and probably never was even made public.  There is also other minor
  driver updates and new device ids, full details in the changelog.

  All of these have been in linux-next for a while"

* tag 'usb-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (233 commits)
  USB: core: Codestyle fix in urb.c
  usb: misc: usb3503: Use i2c_add_driver helper macro
  usb: host: lpc32xx: don't unregister phy device
  usb: host: lpc32xx: balance clk enable/disable on removal
  usb: host: lpc32xx: fix warnings caused by enabling unprepared clock
  uwb: drp: Use setup_timer
  uwb: neh: Use setup_timer
  uwb: rsv: Use setup_timer
  USB: qcserial: add Sierra Wireless MC74xx/EM74xx
  usb: chipidea: otg: don't wait vbus drops below BSV when starts host
  chipidea: ci_hdrc_pci: use PCI_VDEVICE() instead of PCI_DEVICE()
  doc: dt-binding: ci-hdrc-usb2: split vendor specific properties
  usb: chipidea: imx: add imx6ul usb support
  doc: dt-binding: ci-hdrc-usb2: improve property description
  usb: chipidea: imx: add usb support for imx7d
  Doc: usb: ci-hdrc-usb2: Add phy-clkgate-delay-us entry
  usb: chipidea: Add support for 'phy-clkgate-delay-us' property
  usb: chipidea: Use extcon framework for VBUS and ID detect
  usb: gadget: net2280: restore ep_cfg after defect7374 workaround
  usb: dwc2: host: Fix use after free w/ simultaneous irqs
  ...
2015-11-04 21:26:27 -08:00
Mark Brown
4c84518523 Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/owner', 'spi/topic/pxa' and 'spi/topic/pxa2xx' into spi-next 2015-11-04 11:02:12 +00:00
Linus Torvalds
bc9d8c20ff This is the big bulk of pin control changes for the
v4.4 kernel development cycle:
 
 Infrastructure:
 - Doug Anderson wrote a patch adding an "init" state
   different from the "default" state for pin control
   state handling in the core framework. This is applied
   before the driver's probe() call if defined and takes
   precedence over "default". If both are defined, "init"
   will be applied *before* probe() and "default" will be
   applied *after* probe().
 
 Significant subdriver improvements:
 - SH PFC is switched to getting GPIO ranges from the
   device tree ranges property on DT platforms.
 - Got rid of CONFIG_ARCH_SHMOBILE_LEGACY, we are all
   modernized.
 - Got rid of SH PFC hardcoded IRQ numbers.
 - Allwinner sunxi external interrupt through the "r"
   controller.
 - Moved the Cygnus driver to use DT-provided GPIO
   ranges.
 
 New drivers:
 - Atmel PIO4 pin controller for the SAMA4D2 family
 
 New subdrivers:
 - Rockchip RK3036 subdriver
 - Renesas SH PFC R8A7795 subdriver
 - Allwinner sunxi A83T PIO subdriver
 - Freescale i.MX7d iomux lpsr subdriver
 - Marvell Berlin BG4CT subdriver
 - SiRF Atlas 7 step B SoC subdriver
 - Intel Broxton SoC subdriver
 
 Apart from this, the usual slew if syntactic and semantic
 fixes.
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Merge tag 'pinctrl-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the big bulk of pin control changes for the v4.4 kernel
  development cycle.  Development pace is high in pin control again this
  merge window.  28 contributors, 83 patches.

  It hits a few sites outside the pin control subsystem:

   - Device tree bindings in Documentation (as usual)
   - MAINTAINERS
   - drivers/base/* for the "init" state handling by Doug Anderson.
     This has been ACKed by Greg.
   - drivers/usb/renesas_usbhs/rcar2.c, for a dependent Renesas change
     in the USB subsystem.  This has been ACKed by both Greg and Felipe.
   - arch/arm/boot/dts/sama5d2.dtsi - this should ideally have gone
     through the ARM SoC tree but ended up here.

  This time I am using Geert Uytterhoeven as submaintainer for SH PFC
  since the are three-four people working in parallel with new Renesas
  ASICs.

  Summary of changes:

  Infrastructure:

   - Doug Anderson wrote a patch adding an "init" state different from
     the "default" state for pin control state handling in the core
     framework.  This is applied before the driver's probe() call if
     defined and takes precedence over "default".  If both are defined,
     "init" will be applied *before* probe() and "default" will be
     applied *after* probe().

  Significant subdriver improvements:

   - SH PFC is switched to getting GPIO ranges from the device tree
     ranges property on DT platforms.
   - Got rid of CONFIG_ARCH_SHMOBILE_LEGACY, we are all modernized.
   - Got rid of SH PFC hardcoded IRQ numbers.
   - Allwinner sunxi external interrupt through the "r" controller.
   - Moved the Cygnus driver to use DT-provided GPIO ranges.

  New drivers:

   - Atmel PIO4 pin controller for the SAMA4D2 family

  New subdrivers:

   - Rockchip RK3036 subdriver
   - Renesas SH PFC R8A7795 subdriver
   - Allwinner sunxi A83T PIO subdriver
   - Freescale i.MX7d iomux lpsr subdriver
   - Marvell Berlin BG4CT subdriver
   - SiRF Atlas 7 step B SoC subdriver
   - Intel Broxton SoC subdriver

  Apart from this, the usual slew if syntactic and semantic fixes"

* tag 'pinctrl-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (81 commits)
  pinctrl: pinconf: remove needless loop
  pinctrl: uniphier: guard uniphier directory with CONFIG_PINCTRL_UNIPHIER
  pinctrl: zynq: fix UTF-8 errors
  pinctrl: zynq: Initialize early
  pinctrl: at91: add missing of_node_put
  pinctrl: tegra-xusb: Correct lane mux options
  pinctrl: intel: Add Intel Broxton pin controller support
  pinctrl: intel: Allow requesting pins which are in ACPI mode as GPIOs
  pinctrl: intel: Add support for multiple GPIO chips sharing the interrupt
  drivers/pinctrl: Add the concept of an "init" state
  pinctrl: uniphier: set input-enable before pin-muxing
  pinctrl: cygnus: Add new compatible string for gpio controller driver
  pinctrl: cygnus: Remove GPIO to Pinctrl pin mapping from driver
  pinctrl: cygnus: Optional DT property to support pin mappings
  pinctrl: sunxi: Add irq pinmuxing to sun6i "r" pincontroller
  pinctrl: sunxi: Fix irq_of_xlate for the r_pio pinctrl block
  pinctrl: sh-pfc: Remove obsolete r8a7778 platform_device_id entry
  pinctrl: sh-pfc: Remove obsolete r8a7779 platform_device_id entry
  pinctrl: sh-pfc: Stop including <linux/platform_data/gpio-rcar.h>
  usb: renesas_usbhs: Remove unneeded #include <linux/platform_data/gpio-rcar.h>
  ...
2015-11-02 12:30:39 -08:00
Linus Torvalds
56ef9db246 ARM: SoC fixes for v4.3
This should be our final batch of fixes for 4.3:
 
 - A patch from Sudeep Holla that fixes annotation of wakeup sources properly,
   old unused format seems to have spread through copying.
 - Two patches from Tony for OMAP. One dealing with MUSB setup problems due to
   runtime PM being enabled too early on the parent device. The other fixes
   IRQ numbering for OMAP1.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "This should be our final batch of fixes for 4.3:

   - A patch from Sudeep Holla that fixes annotation of wakeup sources
     properly, old unused format seems to have spread through copying.

   - Two patches from Tony for OMAP.  One dealing with MUSB setup
     problems due to runtime PM being enabled too early on the parent
     device.  The other fixes IRQ numbering for OMAP1"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  usb: musb: omap2430: Fix regression caused by driver core change
  ARM: OMAP1: fix incorrect INT_DMA_LCD
  ARM: dts: fix gpio-keys wakeup-source property
2015-10-31 21:36:07 -07:00
Tony Lindgren
8f2279d5d9 usb: musb: omap2430: Fix regression caused by driver core change
Commit ddef08dd00 ("Driver core: wakeup the parent device before trying
probe") started automatically ensuring the parent device is enabled when
the child gets probed.

This however caused a regression for MUSB omap2430 interface as the
runtime PM for the parent device needs the child initialized to access
the MUSB hardware registers.

Let's delay the enabling of PM runtime for the parent until the child
has been properly initialized as suggested in an earlier patch by
Grygorii Strashko <grygorii.strashko@ti.com>.

In addition to delaying pm_runtime_enable, we now also need to make sure
the parent is enabled during omap2430_musb_init. We also want to propagate
an error from omap2430_runtime_resume if struct musb is not initialized.

Note that we use pm_runtime_put_noidle here for both the child and parent
to prevent an extra runtime_suspend/resume cycle.

Let's also add some comments to avoid confusion between the
two different devices.

Fixes: ddef08dd00 ("Driver core: wakeup the parent device before
trying probe")
Suggested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-10-28 10:16:04 -07:00
Andrew F. Davis
3821a065f5 spi: Drop owner assignment from spi_drivers
An spi_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-28 10:30:17 +09:00
Greg Kroah-Hartman
0bbc367e21 Merge 4.3-rc7 into usb-next
We want the USB and other fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-26 06:39:46 +09:00
Jonas Hesselmann
ae416ba4e9 USB: core: Codestyle fix in urb.c
Delete braces around single statement block suggested by checkpatch.pl

Signed-off-by: Jonas Hesselmann <jonas.hesselmann@hotmail.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-26 04:04:48 +09:00
Andrew F. Davis
aa5b477db5 usb: misc: usb3503: Use i2c_add_driver helper macro
Use i2c_add_driver as it will add THIS_MODULE for us.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:53:53 -07:00
Vladimir Zapolskiy
164f0aa872 usb: host: lpc32xx: don't unregister phy device
There is no need to unregister the I2C device, which serves as a phy
from host code, this should be done in the correspondent phy driver.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:53:53 -07:00
Vladimir Zapolskiy
b1a0c42396 usb: host: lpc32xx: balance clk enable/disable on removal
The change adds missing clk_disable_unprepare(usb_otg_clk) call, also
the disabled clocks are sorted in order opposite to enabled clocks.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:53:53 -07:00
Vladimir Zapolskiy
9ae79876d8 usb: host: lpc32xx: fix warnings caused by enabling unprepared clock
If common clock framework is configured, the driver generates a warning,
which is fixed by this change:

    WARNING: CPU: 0 PID: 573 at drivers/clk/clk.c:728 clk_core_enable+0x2c/0xf0()
    Modules linked in: ohci_nxp(+) sc16is7xx snd_soc_uda1380
    CPU: 0 PID: 573 Comm: udevd Not tainted 4.3.0-rc2+ #285
    Hardware name: LPC32XX SoC (Flattened Device Tree)
    Backtrace:
    [<>] (dump_backtrace) from [<>] (show_stack+0x18/0x1c)
    [<>] (show_stack) from [<>] (dump_stack+0x20/0x28)
    [<>] (dump_stack) from [<>] (warn_slowpath_common+0x90/0xb8)
    [<>] (warn_slowpath_common) from [<>] (warn_slowpath_null+0x24/0x2c)
    [<>] (warn_slowpath_null) from [<>] (clk_core_enable+0x2c/0xf0)
    [<>] (clk_core_enable) from [<>] (clk_enable+0x24/0x38)
    [<>] (clk_enable) from [<>] (ohci_hcd_nxp_probe+0x1d0/0x518 [ohci_nxp])
    [<>] (ohci_hcd_nxp_probe [ohci_nxp]) from [<>] (platform_drv_probe+0x50/0xa0)
    [<>] (platform_drv_probe) from [<>] (driver_probe_device+0x18c/0x408)
    [<>] (driver_probe_device) from [<>] (__driver_attach+0x70/0x94)
    [<>] (__driver_attach) from [<>] (bus_for_each_dev+0x74/0x98)
    [<>] (bus_for_each_dev) from [<>] (driver_attach+0x20/0x28)
    [<>] (driver_attach) from [<>] (bus_add_driver+0x11c/0x248)
    [<>] (bus_add_driver) from [<>] (driver_register+0xa4/0xe8)
    [<>] (driver_register) from [<>] (__platform_driver_register+0x50/0x64)
    [<>] (__platform_driver_register) from [<>] (ohci_nxp_init+0x3c/0x5c [ohci_nxp])
    [<>] (ohci_nxp_init [ohci_nxp]) from [<>] (do_one_initcall+0x11c/0x1dc)
    [<>] (do_one_initcall) from [<>] (do_init_module+0x60/0x368)
    [<>] (do_init_module) from [<>] (load_module+0x16d0/0x1b7c)
    [<>] (load_module) from [<>] (SyS_finit_module+0x90/0xa4)
    [<>] (SyS_finit_module) from [<>] (ret_fast_syscall+0x0/0x38)

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-24 19:53:53 -07:00
Bjørn Mork
f504ab1888 USB: qcserial: add Sierra Wireless MC74xx/EM74xx
New device IDs shamelessly lifted from the vendor driver.

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-22 18:26:57 -07:00
Greg Kroah-Hartman
f5ee0557c2 USB-serial updates for v4.4-rc1
These updates generalise the option DTR/RTS handling so that all
 usb-wwan-based drivers can use it. This is specifically needed by some
 Sierra modems, which can now all be handled by qcserial again.
 
 Included are also some clean ups of the io_ti firmware handling.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v4.4-rc1

These updates generalise the option DTR/RTS handling so that all
usb-wwan-based drivers can use it. This is specifically needed by some
Sierra modems, which can now all be handled by qcserial again.

Included are also some clean ups of the io_ti firmware handling.

Signed-off-by: Johan Hovold <johan@kernel.org>
2015-10-22 18:25:45 -07:00
Greg Kroah-Hartman
9e43643b11 USB Chipidea updates for v4.4-rc1
- Use extcon framework for VBUS and ID detect
 - Add imx6sx and imx7d support
 - Other small changes
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Merge tag 'usb-ci-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

Peter writes:

USB Chipidea updates for v4.4-rc1

- Use extcon framework for VBUS and ID detect
- Add imx6sx and imx7d support
- Other small changes
2015-10-22 18:24:38 -07:00
Greg Kroah-Hartman
a4d8e93c31 usb: patches for v4.4 merge window
This pull request is large with a total of 136 non-merge
 commits. Because of its size, we will only describe the big things in
 broad terms.
 
 Many will be happy to know that dwc3 is now almost twice as fast after
 some profiling and speed improvements. Also in dwc3, John Youn from
 Synopsys added support for their new DWC USB3.1 IP Core and the HAPS
 platform which can be used to validate it.
 
 A series of patches from Robert Baldyga cleaned up uses of
 ep->driver_data as a flag for "claimed endpoint" in favor of the new
 ep->claimed flag.
 
 Sudip Mukherjee fixed a ton of really old problems on the amd5536udc
 driver. That should make a few people happy.
 
 Heikki Krogerus worked on converting dwc3 to the unified device property
 interface.
 
 Together with these, there's a ton of non-critical fixes, typos and
 stuff like that.
 
 Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'usb-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

usb: patches for v4.4 merge window

This pull request is large with a total of 136 non-merge
commits. Because of its size, we will only describe the big things in
broad terms.

Many will be happy to know that dwc3 is now almost twice as fast after
some profiling and speed improvements. Also in dwc3, John Youn from
Synopsys added support for their new DWC USB3.1 IP Core and the HAPS
platform which can be used to validate it.

A series of patches from Robert Baldyga cleaned up uses of
ep->driver_data as a flag for "claimed endpoint" in favor of the new
ep->claimed flag.

Sudip Mukherjee fixed a ton of really old problems on the amd5536udc
driver. That should make a few people happy.

Heikki Krogerus worked on converting dwc3 to the unified device property
interface.

Together with these, there's a ton of non-critical fixes, typos and
stuff like that.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-22 17:19:33 -07:00
Li Jun
851ce93224 usb: chipidea: otg: don't wait vbus drops below BSV when starts host
Some HW design may use ID pin state to control vbus for otg port,
so before host role start, the vbus is already turned on, in this
case, we do not need wait vbus dropping below BSV.

Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-10-22 09:36:23 +08:00
Sergei Shtylyov
46b95a1d66 chipidea: ci_hdrc_pci: use PCI_VDEVICE() instead of PCI_DEVICE()
Fix using the PCI_DEVICE() macro instead of less verbose PCI_VDEVICE().

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-10-22 09:36:22 +08:00
Peter Chen
52fe568e5d usb: chipidea: imx: add imx6ul usb support
Add imx6ul usb support.

Signed-off-by: Peter chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-10-22 09:27:12 +08:00
Peter Chen
5cb377c52f usb: chipidea: imx: add usb support for imx7d
Add imx7d usb support.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
2015-10-22 09:25:26 +08:00
Fabio Estevam
1fbf46280e usb: chipidea: Add support for 'phy-clkgate-delay-us' property
Add support for the optional 'phy-clkgate-delay-us' property that is
used to describe the delay time between putting PHY into low power mode
and turning off the PHY clock.

Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-10-22 09:24:25 +08:00
Ivan T. Ivanov
3ecb3e09b0 usb: chipidea: Use extcon framework for VBUS and ID detect
On recent Qualcomm platforms VBUS and ID lines are not routed to
USB PHY LINK controller. Use extcon framework to receive connect
and disconnect ID and VBUS notification.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-10-22 09:24:25 +08:00
Junghak Sung
33119e80c3 [media] media: videobuf2: Change queue_setup argument
Replace struct v4l2_format * with void * to make queue_setup()
for common use.
And then, modify all device drivers related with this change.

Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: fix missing const in fimc-lite.c]

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-10-20 14:48:39 -02:00
Geert Uytterhoeven
f15f30449a usb: renesas_usbhs: Remove unneeded #include <linux/platform_data/gpio-rcar.h>
This header file will be removed soon.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <balbi@ti.com>
2015-10-20 16:03:36 +02:00
Mian Yousaf Kaukab
81e9d14a53 usb: gadget: net2280: restore ep_cfg after defect7374 workaround
Defect 7374 workaround enables all GPEP as endpoint 0. Restore
endpoint number when defect 7374 workaround is disabled. Otherwise,
check to match USB endpoint number to hardware endpoint number in
net2280_enable() fails.

Cc: <stable@vger.kernel.org> # 4.2
Reported-by: Paul Jones <p.jones@teclyn.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-19 09:25:53 -05:00
Doug Anderson
dc87308469 usb: dwc2: host: Fix use after free w/ simultaneous irqs
While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD.  If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case.  This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
 Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
 (dwc2_hc_nak_intr+0x5c/0x198)
 (dwc2_handle_hcd_intr+0xa84/0xbf8)
 (_dwc2_hcd_irq+0x1c/0x20)
 (usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
 0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
     chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
     qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
 1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
     drivers/usb/dwc2/hcd_intr.c:2041
 2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
 3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
     drivers/usb/dwc2/hcd_intr.c:2128
 4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
 5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
     drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
 (gdb) print /x hcint
 $12 = 0x12

AKA:
 #define HCINTMSK_CHHLTD  (1 << 1)
 #define HCINTMSK_NAK     (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free.  See <http://crosreview.com/305712> for a patch and
instructions.  This lead to getting the following stack crawl of the
actual free:
 0  arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
 1  kgdb_breakpoint () at kernel/debug/debug_core.c:1054
 2  dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
      out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
 3  dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
      hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
 4  dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
      chan=chan@entry=0xed5be000, qtd=<optimized out>,
      halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
 5  dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
      out>, halt_status=<optimized out>) at
      drivers/usb/dwc2/hcd_intr.c:804
 6  dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
      halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
      out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
 7  dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
      chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
      qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
 8  dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
      hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
 9  dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
      hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
 10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
      drivers/usb/dwc2/hcd_intr.c:2052
 11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
 12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
      drivers/usb/dwc2/hcd_intr.c:2147
 13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
 14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
      drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-19 09:22:46 -05:00
Geliang Tang
ebd2938577 usb: gadget: fix a trivial typo
s/regsiter/register/

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-19 09:20:05 -05:00
Peter Hurley
b140dfe622 usb: gadget: gserial: Privatize close_wait
close_wait is no longer needed or provided by the tty core.
Move close_wait to struct gs_port.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-17 21:11:29 -07:00
Peter Senna Tschudin
ffa2366666 usb/host/fotg210: Remove return statement inside if
This patch make changes to an if else statement which simplifies the code
allowing to remove a return.

CC: Joe Perches <joe@perches.com>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-17 20:49:50 -07:00
Laura Abbott
fd7cd061ad xhci: Add spurious wakeup quirk for LynxPoint-LP controllers
We received several reports of systems rebooting and powering on
after an attempted shutdown. Testing showed that setting
XHCI_SPURIOUS_WAKEUP quirk in addition to the XHCI_SPURIOUS_REBOOT
quirk allowed the system to shutdown as expected for LynxPoint-LP
xHCI controllers. Set the quirk back.

Note that the quirk was originally introduced for LynxPoint and
LynxPoint-LP just for this same reason. See:

commit 638298dc66 ("xhci: Fix spurious wakeups after S5 on Haswell")

It was later limited to only concern HP machines as it caused
regression on some machines, see both bug and commit:

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=66171
commit 6962d914f3 ("xhci: Limit the spurious wakeup fix only to HP machines")

Later it was discovered that the powering on after shutdown
was limited to LynxPoint-LP (Haswell-ULT) and that some non-LP HP
machine suffered from spontaneous resume from S3 (which should
not be related to the SPURIOUS_WAKEUP quirk at all). An attempt
to fix this then removed the SPURIOUS_WAKEUP flag usage completely.

commit b45abacde3 ("xhci: no switching back on non-ULT Haswell")

Current understanding is that LynxPoint-LP (Haswell ULT) machines
need the SPURIOUS_WAKEUP quirk, otherwise they will restart, and
plain Lynxpoint (Haswell) machines may _not_ have the quirk
set otherwise they again will restart.

Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Oliver Neukum <oneukum@suse.com>
[Added more history to commit message -Mathias]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-17 00:04:18 -07:00
Mathias Nyman
3b4739b895 xhci: handle no ping response error properly
If a host fails to wake up a isochronous SuperSpeed device from U1/U2
in time for a isoch transfer it will generate a "No ping response error"
Host will then move to the next transfer descriptor.

Handle this case in the same way as missed service errors, tag the
current TD as skipped and handle it on the next transfer event.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-17 00:04:18 -07:00
Mathias Nyman
e210c422b6 xhci: don't finish a TD if we get a short transfer event mid TD
If the difference is big enough between the bytes asked and received
in a bulk transfer we can get a short transfer event pointing to a TRB in
the middle of the TD. We don't want to handle the TD yet as we will anyway
receive a new event for the last TRB in the TD.

Hold off from finishing the TD and removing it from the list until we
receive an event for the last TRB in the TD

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-17 00:04:18 -07:00
Peter Senna Tschudin
50bdb12388 usb/host/fotg210: Add function scan_frame_queue()
checkpatch complains about too many leading tabs because the if
statement starts after 6 tabs:

scan_iosoc() -> for() -> while() -> switch() -> if() -> for() -> if()

There is also a goto statement going backwards in case of failure. This
patch creates a new inline function named scan_frame_queue() containing
the last 4 nesting levels, and removes the need of backwards goto,
making the code easier to read. After the patch it becomes:

scan_iosoc() -> for() -> while() -> scan_frame_queue()

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:27 -07:00
Peter Senna Tschudin
32fb1939e3 usb/host/fotg210: Add function: output_buf_tds_dir()
checkpatch complains about too many leading tabs because the switch
statement starts after 6 tabs.

fill_periodic_buffer() -> for() -> do -> switch() -> if() ->
list_for_each_entry() and finally the last switch().

This patch moves the list_for_each_entry() and the last switch() to a
new function named output_buf_tds_dir(). This change makes the code
easier to read and calm down checkpatch. This patch changes it to:

fill_periodic_buffer() -> for() -> do -> switch() -> if() ->
output_buf_tds_dir()

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:27 -07:00
Peter Senna Tschudin
c4d66b5f8d usb/host/fotg210: convert macro to inline function
This patch convert the macro speed_char in an inline function. The goal
of this patch is to make the code easier to read.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:27 -07:00
Peter Senna Tschudin
05ebc36e48 usb/host/fotg210: replace msleep by usleep_range
msleep under 20ms can result in sleeping up to 20ms, which may not be
intended. Replace msleep(5) by usleep_range(5000, 10000). The range of 5
ms is to reduce the chances of creating an interrupt while reducing the
maximum wait time in 50%.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:27 -07:00
Peter Senna Tschudin
0d88002e27 usb/host/fotg210: change kmalloc by kmalloc_array
This patch replaces:

kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC)

by:

kmalloc_array(DBG_SCHED_LIMIT, sizeof(*seen), GFP_ATOMIC)

as kmalloc_array() should be used for allocating arrays.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:27 -07:00
Peter Senna Tschudin
f238b4e2b3 usb/host/fotg210: Remove useless else statement
This patch remove an else statement after a return to make the code
easier to understand.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:22 -07:00
Peter Senna Tschudin
5ec9b891a2 usb/host/fotg210: remove KERN_WARNING from pr_warn
This patch remove KERN_WARNING from a call to pr_warn().

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:22 -07:00
Peter Senna Tschudin
259127ba78 usb/host/fotg210: Fix coding style issues
This patch fix coding style issues reported by checkpatch that do not
change semantics of the code.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:46:22 -07:00
Peter Senna Tschudin
34e51ba6b6 usb-host: Remove fusbh200 driver
fusbh200 and fotg210 are very similar. The initial idea was to consolidate
both drivers but I'm afraid fusbh200 is not being used.

This patch remove the fusbh200 source code, update Kconfig and two
Makefiles.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: John Chiang <john453@faraday-tech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:44:33 -07:00
Sergei Shtylyov
d491fe75ed usb: hcd: use USB_DT_*
Fix using the bare numbers to set the 'bDescriptorType' descriptor fields
while the values are #define'd in <linux/usb/ch9.h>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:40:06 -07:00