1. 09 Sep, 2017 14 commits
    • Akinobu Mita's avatar
      iio: adc: ti-ads1015: don't return invalid value from buffer setup callbacks · 00202ded
      Akinobu Mita authored
      commit a6fe5e52 upstream.
      
      pm_runtime_get_sync() and pm_runtime_put_autosuspend() return 0 on
      success, 1 if the device's runtime PM status was already requested status
      or error code on failure.  So a positive return value doesn't indicate an
      error condition.
      
      However, any non-zero return values from buffer preenable and postdisable
      callbacks are recognized as an error and this driver reuses the return
      value from pm_runtime_get_sync() and pm_runtime_put_autosuspend() in
      these callbacks.  This change fixes the false error detections.
      
      Cc: Daniel Baluta <daniel.baluta@gmail.com>
      Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
      Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      00202ded
    • Akinobu Mita's avatar
      iio: adc: ti-ads1015: avoid getting stale result after runtime resume · 303d31eb
      Akinobu Mita authored
      commit 73e3e3fc upstream.
      
      This driver assumes that the device is operating in the continuous
      conversion mode which performs the conversion continuously.  So this driver
      doesn't insert a wait time before reading the conversion register if the
      configuration is not changed from a previous request.
      
      This assumption is broken if the device is runtime suspended and entered
      a power-down state.  The forthcoming request causes reading a stale result
      from the conversion register as the device is runtime resumed just before.
      
      Fix it by adding a flag to detect that condition and insert a necessary
      wait time.
      
      Cc: Daniel Baluta <daniel.baluta@gmail.com>
      Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
      Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      303d31eb
    • Akinobu Mita's avatar
      iio: adc: ti-ads1015: enable conversion when CONFIG_PM is not set · 6c164a8a
      Akinobu Mita authored
      commit e8245c68 upstream.
      
      The ADS1015 device have two operating modes, continuous conversion mode
      and single-shot mode.  This driver assumes that the continuous conversion
      mode is selected by runtime resume callback when the ADC result is
      requested.
      
      If CONFIG_PM is disabled, the device is always in the default single-shot
      mode and no one begins a single conversion.  So the conversion register
      doesn't contain valid ADC result.  Fix it by changing the continuous mode
      in probe function.
      
      Cc: Daniel Baluta <daniel.baluta@gmail.com>
      Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
      Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      6c164a8a
    • Akinobu Mita's avatar
      iio: adc: ti-ads1015: fix scale information for ADS1115 · 6c5595e0
      Akinobu Mita authored
      commit 8d0e8e79 upstream.
      
      The ti-ads1015 driver supports ADS1015 and ADS1115 devices.  The same
      scale information is used for both devices in this driver, however they
      have actually different values and the ADS1115's one is not correct.
      
      These devices have the same full-scale input voltage range for each PGA
      selection.  So instead of adding another hardcoded scale information,
      compute a correct scale on demand from each device's resolution.
      
      Cc: Daniel Baluta <daniel.baluta@gmail.com>
      Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
      Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      6c5595e0
    • Akinobu Mita's avatar
      iio: adc: ti-ads1015: fix incorrect data rate setting update · 1d7fadc5
      Akinobu Mita authored
      commit 0d106b74 upstream.
      
      The ti-ads1015 driver has eight iio voltage channels and each iio channel
      can hold own sampling frequency information.
      
      The ADS1015 device only have a single config register which contains an
      input multiplexer selection, PGA and data rate settings.  So the driver
      should load the correct settings when the input multiplexer selection is
      changed.
      
      However, regardless of which channlel is currently selected, changing any
      iio channel's sampling frequency information immediately overwrites the
      current data rate setting in the config register.
      
      It breaks the current data rate setting if the different channel's sampling
      frequency information is changed because the data rate setting is not
      reloaded when the input multiplexer is switched.
      
      This removes the unexpected config register update and correctly load the
      data rate setting before getting adc result.
      
      Cc: Daniel Baluta <daniel.baluta@gmail.com>
      Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
      Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      1d7fadc5
    • Colin Ian King's avatar
      staging/rts5208: fix incorrect shift to extract upper nybble · 70bfcf9e
      Colin Ian King authored
      commit 34ff1bf4 upstream.
      
      The mask of sns_key_info1 suggests the upper nybble is being extracted
      however the following shift of 8 bits is too large and always results in
      0.  Fix this by shifting only by 4 bits to correctly get the upper nybble.
      
      Detected by CoverityScan, CID#142891 ("Operands don't affect result")
      
      Fixes: fa590c22 ("staging: rts5208: add support for rts5208 and rts5288")
      Signed-off-by: default avatarColin Ian King <colin.king@canonical.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      70bfcf9e
    • Douglas Anderson's avatar
      USB: core: Avoid race of async_completed() w/ usbdev_release() · ed68c935
      Douglas Anderson authored
      commit ed62ca2f upstream.
      
      While running reboot tests w/ a specific set of USB devices (and
      slub_debug enabled), I found that once every few hours my device would
      be crashed with a stack that looked like this:
      
      [   14.012445] BUG: spinlock bad magic on CPU#0, modprobe/2091
      [   14.012460]  lock: 0xffffffc0cb055978, .magic: ffffffc0, .owner: cryption contexts: %lu/%lu
      [   14.012460] /1025536097, .owner_cpu: 0
      [   14.012466] CPU: 0 PID: 2091 Comm: modprobe Not tainted 4.4.79 #352
      [   14.012468] Hardware name: Google Kevin (DT)
      [   14.012471] Call trace:
      [   14.012483] [<....>] dump_backtrace+0x0/0x160
      [   14.012487] [<....>] show_stack+0x20/0x28
      [   14.012494] [<....>] dump_stack+0xb4/0xf0
      [   14.012500] [<....>] spin_dump+0x8c/0x98
      [   14.012504] [<....>] spin_bug+0x30/0x3c
      [   14.012508] [<....>] do_raw_spin_lock+0x40/0x164
      [   14.012515] [<....>] _raw_spin_lock_irqsave+0x64/0x74
      [   14.012521] [<....>] __wake_up+0x2c/0x60
      [   14.012528] [<....>] async_completed+0x2d0/0x300
      [   14.012534] [<....>] __usb_hcd_giveback_urb+0xc4/0x138
      [   14.012538] [<....>] usb_hcd_giveback_urb+0x54/0xf0
      [   14.012544] [<....>] xhci_irq+0x1314/0x1348
      [   14.012548] [<....>] usb_hcd_irq+0x40/0x50
      [   14.012553] [<....>] handle_irq_event_percpu+0x1b4/0x3f0
      [   14.012556] [<....>] handle_irq_event+0x4c/0x7c
      [   14.012561] [<....>] handle_fasteoi_irq+0x158/0x1c8
      [   14.012564] [<....>] generic_handle_irq+0x30/0x44
      [   14.012568] [<....>] __handle_domain_irq+0x90/0xbc
      [   14.012572] [<....>] gic_handle_irq+0xcc/0x18c
      
      Investigation using kgdb() found that the wait queue that was passed
      into wake_up() had been freed (it was filled with slub_debug poison).
      
      I analyzed and instrumented the code and reproduced.  My current
      belief is that this is happening:
      
      1. async_completed() is called (from IRQ).  Moves "as" onto the
         completed list.
      2. On another CPU, proc_reapurbnonblock_compat() calls
         async_getcompleted().  Blocks on spinlock.
      3. async_completed() releases the lock; keeps running; gets blocked
         midway through wake_up().
      4. proc_reapurbnonblock_compat() => async_getcompleted() gets the
         lock; removes "as" from completed list and frees it.
      5. usbdev_release() is called.  Frees "ps".
      6. async_completed() finally continues running wake_up().  ...but
         wake_up() has a pointer to the freed "ps".
      
      The instrumentation that led me to believe this was based on adding
      some trace_printk() calls in a select few functions and then using
      kdb's "ftdump" at crash time.  The trace follows (NOTE: in the trace
      below I cheated a little bit and added a udelay(1000) in
      async_completed() after releasing the spinlock because I wanted it to
      trigger quicker):
      
      <...>-2104   0d.h2 13759034us!: async_completed at start: as=ffffffc0cc638200
      mtpd-2055    3.... 13759356us : async_getcompleted before spin_lock_irqsave
      mtpd-2055    3d..1 13759362us : async_getcompleted after list_del_init: as=ffffffc0cc638200
      mtpd-2055    3.... 13759371us+: proc_reapurbnonblock_compat: free_async(ffffffc0cc638200)
      mtpd-2055    3.... 13759422us+: async_getcompleted before spin_lock_irqsave
      mtpd-2055    3.... 13759479us : usbdev_release at start: ps=ffffffc0cc042080
      mtpd-2055    3.... 13759487us : async_getcompleted before spin_lock_irqsave
      mtpd-2055    3.... 13759497us!: usbdev_release after kfree(ps): ps=ffffffc0cc042080
      <...>-2104   0d.h2 13760294us : async_completed before wake_up(): as=ffffffc0cc638200
      
      To fix this problem we can just move the wake_up() under the ps->lock.
      There should be no issues there that I'm aware of.
      Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
      Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      ed68c935
    • Martijn Coenen's avatar
      ANDROID: binder: add hwbinder,vndbinder to BINDER_DEVICES. · ffdb5b9e
      Martijn Coenen authored
      commit 9e18d0c8 upstream.
      
      These will be required going forward.
      Signed-off-by: default avatarMartijn Coenen <maco@android.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      ffdb5b9e
    • Martijn Coenen's avatar
      ANDROID: binder: add padding to binder_fd_array_object. · 74ffccfe
      Martijn Coenen authored
      commit 5cdcf4c6 upstream.
      
      binder_fd_array_object starts with a 4-byte header,
      followed by a few fields that are 8 bytes when
      ANDROID_BINDER_IPC_32BIT=N.
      
      This can cause alignment issues in a 64-bit kernel
      with a 32-bit userspace, as on x86_32 an 8-byte primitive
      may be aligned to a 4-byte address. Pad with a __u32
      to fix this.
      Signed-off-by: default avatarMartijn Coenen <maco@android.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      74ffccfe
    • Johan Hovold's avatar
      USB: musb: fix external abort on suspend · 68596cc2
      Johan Hovold authored
      commit 082df8be upstream.
      
      Make sure that the controller is runtime resumed when system suspending
      to avoid an external abort when accessing the interrupt registers:
      
        Unhandled fault: external abort on non-linefetch (0x1008) at 0xd025840a
        ...
        [<c05481a4>] (musb_default_readb) from [<c0545abc>] (musb_disable_interrupts+0x84/0xa8)
        [<c0545abc>] (musb_disable_interrupts) from [<c0546b08>] (musb_suspend+0x38/0xb8)
        [<c0546b08>] (musb_suspend) from [<c04a57f8>] (platform_pm_suspend+0x3c/0x64)
      
      This is easily reproduced on a BBB by enabling the peripheral port only
      (as the host port may enable the shared clock) and keeping it
      disconnected so that the controller is runtime suspended. (Well, you
      would also need to the not-yet-merged am33xx-suspend patches by Dave
      Gerlach to be able to suspend the BBB.)
      
      This is a regression that was introduced by commit 1c4d0b4e ("usb:
      musb: Remove pm_runtime_set_irq_safe") which allowed the parent glue
      device to runtime suspend and thereby exposed a couple of older issues:
      
      Register accesses without explicitly making sure the controller is
      runtime resumed during suspend was first introduced by commit c338412b
      ("usb: musb: unconditionally save and restore the context on suspend")
      in 3.14.
      
      Commit a1fc1920 ("usb: musb: core: make sure musb is in RPM_ACTIVE on
      resume") later started setting the RPM status to active during resume,
      and this was also implicitly relying on the parent always being active.
      Since commit 71723f95 ("PM / runtime: print error when activating a
      child to unactive parent") this now also results in the following
      warning:
      
        musb-hdrc musb-hdrc.0: runtime PM trying to activate child device
          musb-hdrc.0 but parent (47401400.usb) is not active
      
      This patch has been verified on 4.13-rc2, 4.12 and 4.9 using a BBB
      (the dsps glue would always be active also in 4.8).
      
      Fixes: c338412b ("usb: musb: unconditionally save and restore the context on suspend")
      Fixes: a1fc1920 ("usb: musb: core: make sure musb is in RPM_ACTIVE on resume")
      Fixes: 1c4d0b4e ("usb: musb: Remove pm_runtime_set_irq_safe")
      Cc: Alan Stern <stern@rowland.harvard.edu>
      Cc: Daniel Mack <zonque@gmail.com>
      Cc: Dave Gerlach <d-gerlach@ti.com>
      Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
      Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
      Cc: Tony Lindgren <tony@atomide.com>
      Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
      Signed-off-by: default avatarBin Liu <b-liu@ti.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      68596cc2
    • Sandeep Singh's avatar
      usb:xhci:Fix regression when ATI chipsets detected · c927f42c
      Sandeep Singh authored
      commit e6b422b8 upstream.
      
      The following commit cause a regression on ATI chipsets.
      'commit e788787e ("usb:xhci:Add quirk for Certain
      failing HP keyboard on reset after resume")'
      
      This causes pinfo->smbus_dev to be wrongly set to NULL on
      systems with the ATI chipset that this function checks for first.
      
      Added conditional check for AMD chipsets to avoid the overwriting
      pinfo->smbus_dev.
      Reported-by: default avatarBen Hutchings <ben@decadent.org.uk>
      Fixes: e788787e ("usb:xhci:Add quirk for Certain
      failing HP keyboard on reset after resume")
      cc: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
      Signed-off-by: default avatarSandeep Singh <Sandeep.Singh@amd.com>
      Signed-off-by: default avatarShyam Sundar S K <Shyam-sundar.S-k@amd.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      c927f42c
    • Dmitry Fleytman's avatar
      usb: Add device quirk for Logitech HD Pro Webcam C920-C · 0e8e3797
      Dmitry Fleytman authored
      commit a1279ef7 upstream.
      
      Commit e0429362
      ("usb: Add device quirk for Logitech HD Pro Webcams C920 and C930e")
      introduced quirk to workaround an issue with some Logitech webcams.
      
      Apparently model C920-C has the same issue so applying
      the same quirk as well.
      
      See aforementioned commit message for detailed explanation of the problem.
      Signed-off-by: default avatarDmitry Fleytman <dmitry@daynix.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      0e8e3797
    • Maciej S. Szmigiero's avatar
      USB: serial: option: add support for D-Link DWM-157 C1 · c8ff3d1a
      Maciej S. Szmigiero authored
      commit 169e8654 upstream.
      
      This commit adds support (an ID, really) for D-Link DWM-157 hardware
      version C1 USB modem to option driver.
      
      According to manufacturer-provided Windows INF file the device has four
      serial ports:
      "D-Link HSPA+DataCard Diagnostics Interface" (interface 2; modem port),
      "D-Link HSPA+DataCard NMEA Device" (interface 3),
      "D-Link HSPA+DataCard Speech Port" (interface 4),
      "D-Link HSPA+DataCard Debug Port" (interface 5).
      
      usb-devices output:
      T:  Bus=05 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#=  3 Spd=480 MxCh= 0
      D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
      P:  Vendor=2001 ProdID=7d0e Rev=03.00
      S:  Manufacturer=D-Link,Inc
      S:  Product=D-Link DWM-157
      C:  #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA
      I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
      I:  If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
      I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=02 Prot=01 Driver=option
      I:  If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
      I:  If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
      I:  If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
      I:  If#= 6 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
      Signed-off-by: default avatarMaciej S. Szmigiero <mail@maciej.szmigiero.name>
      Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      c8ff3d1a
    • Kai-Heng Feng's avatar
      usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard · 572bcfc7
      Kai-Heng Feng authored
      commit de3af5bf upstream.
      
      Corsair Strafe RGB keyboard has trouble to initialize:
      
      [ 1.679455] usb 3-6: new full-speed USB device number 4 using xhci_hcd
      [ 6.871136] usb 3-6: unable to read config index 0 descriptor/all
      [ 6.871138] usb 3-6: can't read configurations, error -110
      [ 6.991019] usb 3-6: new full-speed USB device number 5 using xhci_hcd
      [ 12.246642] usb 3-6: unable to read config index 0 descriptor/all
      [ 12.246644] usb 3-6: can't read configurations, error -110
      [ 12.366555] usb 3-6: new full-speed USB device number 6 using xhci_hcd
      [ 17.622145] usb 3-6: unable to read config index 0 descriptor/all
      [ 17.622147] usb 3-6: can't read configurations, error -110
      [ 17.742093] usb 3-6: new full-speed USB device number 7 using xhci_hcd
      [ 22.997715] usb 3-6: unable to read config index 0 descriptor/all
      [ 22.997716] usb 3-6: can't read configurations, error -110
      
      Although it may work after several times unpluging/pluging:
      
      [ 68.195240] usb 3-6: new full-speed USB device number 11 using xhci_hcd
      [ 68.337459] usb 3-6: New USB device found, idVendor=1b1c, idProduct=1b20
      [ 68.337463] usb 3-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
      [ 68.337466] usb 3-6: Product: Corsair STRAFE RGB Gaming Keyboard
      [ 68.337468] usb 3-6: Manufacturer: Corsair
      [ 68.337470] usb 3-6: SerialNumber: 0F013021AEB8046755A93ED3F5001941
      
      Tried three quirks: USB_QUIRK_DELAY_INIT, USB_QUIRK_NO_LPM and
      USB_QUIRK_DEVICE_QUALIFIER, user confirmed that USB_QUIRK_DELAY_INIT alone
      can workaround this issue. Hence add the quirk for Corsair Strafe RGB.
      
      BugLink: https://bugs.launchpad.net/bugs/1678477Signed-off-by: default avatarKai-Heng Feng <kai.heng.feng@canonical.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      572bcfc7
  2. 07 Sep, 2017 26 commits