target/linux/generic/pending-4.14/831-ledtrig_netdev.patch

   1 From: Alexey Brodkin <abrodkin@synopsys.com>
   2 Subject: usb: Remove annoying warning about bogus URB
   3
   4 When ath9k-htc Wi-Fi dongle is used with generic OHCI controller
   5 infinite stream of warnings appears in debug console like this:
   6 -------------------------->8----------------------
   7 usb 1-1: new full-speed USB device number 2 using ohci-platform
   8 usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
   9 usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size:
  10 51008
  11 ------------[ cut here ]------------
  12 WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
  13 usb_submit_urb+0x1b4/0x498()
  14 usb 1-1: BOGUS urb xfer, pipe 1 != type 3
  15 Modules linked in:
  16 CPU: 0 PID: 19 Comm: kworker/0:1 Not tainted
  17 4.4.0-rc4-00017-g00e2d79-dirty #3
  18 Workqueue: events request_firmware_work_func
  19
  20 Stack Trace:
  21 arc_unwind_core.constprop.1+0xa4/0x110
  22 ---[ end trace 649ef8c342817fc2 ]---
  23 ------------[ cut here ]------------
  24 WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
  25 usb_submit_urb+0x1b4/0x498()
  26 usb 1-1: BOGUS urb xfer, pipe 1 != type 3
  27 Modules linked in:
  28 CPU: 0 PID: 19 Comm: kworker/0:1 Tainted: G        W
  29 4.4.0-rc4-00017-g00e2d79-dirty #3
  30 Workqueue: events request_firmware_work_func
  31
  32 Stack Trace:
  33 arc_unwind_core.constprop.1+0xa4/0x110
  34 ---[ end trace 649ef8c342817fc3 ]---
  35 ------------[ cut here ]------------
  36 -------------------------->8----------------------
  37
  38 There're some discussions in mailing lists proposing to disable
  39 that particular check alltogether and magically all seem to work
  40 fine with muted warning.
  41
  42 Anyways new thread on that regard could be found here:
  43 http://lists.infradead.org/pipermail/linux-snps-arc/2016-July/001310.html
  44
  45 Let's see what comes out of that new discussion, hopefully patching
  46 of generic USB stuff won't be required then.
  47
  48 Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  49 ---
  50  drivers/leds/Makefile        | 1 +
  51  drivers/leds/trigger/Kconfig | 7 +++++++
  52  2 files changed, 8 insertions(+)
  53
  54 --- a/drivers/leds/Makefile
  55 +++ b/drivers/leds/Makefile
  56 @@ -82,3 +82,4 @@ obj-$(CONFIG_LEDS_USER)                       += uleds.o
  57
  58  # LED Triggers
  59  obj-$(CONFIG_LEDS_TRIGGERS)            += trigger/
  60 +obj-$(CONFIG_LEDS_TRIGGER_NETDEV)      += ledtrig-netdev.o
  61 --- a/drivers/leds/trigger/Kconfig
  62 +++ b/drivers/leds/trigger/Kconfig
  63 @@ -126,4 +126,11 @@ config LEDS_TRIGGER_PANIC
  64           a different trigger.
  65           If unsure, say Y.
  66
  67 +config LEDS_TRIGGER_NETDEV
  68 +       tristate "LED Netdev Trigger"
  69 +       depends on NET && LEDS_TRIGGERS
  70 +       help
  71 +         This allows LEDs to be controlled by network device activity.
  72 +         If unsure, say Y.
  73 +
  74  endif # LEDS_TRIGGERS