[ath9k-devel] ATH9K warnings from commit b2d70d494

It's an AR9462

Here's the wifi adapter:

03:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network
Adapter (rev 01)
Subsystem: Lite-On Communications Inc Device 6621
Flags: bus master, fast devsel, latency 0, IRQ 19
Memory at f7c00000 (64-bit, non-prefetchable) [size=512K]
Expansion ROM at f7c80000 [disabled] [size=64K]
Capabilities: [40] Power Management version 2
Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00
Kernel driver in use: ath9k

The warnings go away with the patch you identified and wifi and bluetooth
are working.


On Thu, Jun 16, 2016 at 7:12 AM Valo, Kalle <[email protected]> wrote:

> (Adding linux-wireless)
>
> johnsgruber at gmail.com writes:
>
> > I'm getting many warning stack traces fom the above--at least two every 5
> > seconds whether or not connected via wireless.
> >
> > Samples are below.
> >
> > On further investigation I see that for each of the pair gpio = 11, for
> > the first ah->caps.num_gpio_pins = 10 and for the second BIT(gpio) =
> 0x800
> > and ah->caps.gpio_mask = 0x3ff.
> >
> > I gather this is unexpected, but it seems like some limit on output is
> in order.
> >
> > If you can't reproduce this situation on your own systems please let me
> know
> > if you would like me to gather more information for you on the basic
> problem,
> > test, etc.
>
> Kernel seems to be 4.7-rc3, but what chip? Maybe AR9462 or AR9565?
>
> > Jun 15 07:55:13 gruber-ubuntu-acer kernel: [193389.532500] ---[ end
> > trace c25c9fdececff7b3 ]---
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523554]
> > ------------[ cut here ]------------
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523567] WARNING:
> > CPU: 2 PID: 17657 at drivers/net/wireless/ath/ath9k/hw.c:2776
> > ath9k_hw_gpio_get+0x1a9/0x1b0 [ath9k_hw]
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523568] Modules
> > linked in: ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat
> > nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
> > nf_conntrack ipt_REJECT nf_reject_ipv4 xt_CHECKSUM iptable_mangle
> > xt_tcpudp bridge stp llc ip6table_filter ip6_tables iptable_filter
> > ip_tables ebtable_nat ebtables x_tables cmac bnep rfcomm binfmt_misc
> > nls_iso8859_1 usblp arc4 ath9k snd_hda_codec_hdmi uvcvideo
> > ath9k_common ath9k_hw i915 x86_pkg_temp_thermal intel_powerclamp
> > coretemp kvm_intel snd_usb_audio snd_hda_codec_realtek
> > videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 kvm ath
> > videobuf2_core snd_hda_codec_generic videodev mac80211 snd_hda_intel
> > snd_hda_codec snd_hda_core ath3k snd_usbmidi_lib joydev rtsx_usb btusb
> > irqbypass btrtl crc32_pclmul snd_hwdep ghash_clmulni_intel btbcm
> > snd_pcm btintel bluetooth drm_kms_helper cfg80211 aesni_intel
> > snd_seq_midi snd_seq_midi_event aes_x86_64 drm lrw snd_rawmidi snd_seq
> > glue_helper ablk_helper cryptd intel_cstate snd_seq_device intel_rapl
> > snd_timer snd i2c_algo_bit fb_sys_fops syscopyarea mei_me mei
> > sysfillrect sysimgblt soundcore serio_raw shpchp wmi lpc_ich
> > parport_pc ppdev lp video mac_hid parport hid_generic usbhid hid
> > psmouse r8169 mii fjes
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523613] CPU: 2 PID:
> > 17657 Comm: kworker/u8:0 Tainted: G        W       4.7.0-rc3 #1
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523614] Hardware
> > name: Acer Aspire TC-605/Aspire TC-605, BIOS P11-A2 11/08/2013
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523618] Workqueue:
> > events_power_efficient rfkill_poll
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523620]
> > 0000000000000000 ffff88003ed37d28 ffffffff813888ec 0000000000000000
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523621]
> > 0000000000000000 ffff88003ed37d68 ffffffff81061311 00000ad800000082
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523623]
> > ffff8800d28ec018 000000000000000b ffff8800d28f0720 0000000000000100
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523625] Call Trace:
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523629]
> > [<ffffffff813888ec>] dump_stack+0x63/0x87
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523633]
> > [<ffffffff81061311>] __warn+0xd1/0xf0
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523634]
> > [<ffffffff810613fd>] warn_slowpath_null+0x1d/0x20
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523639]
> > [<ffffffffa096ab19>] ath9k_hw_gpio_get+0x1a9/0x1b0 [ath9k_hw]
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523642]
> > [<ffffffffa06293e4>] ath9k_rfkill_poll_state+0x34/0x60 [ath9k]
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523656]
> > [<ffffffffa046bb53>] ieee80211_rfkill_poll+0x33/0x40 [mac80211]
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523665]
> > [<ffffffffa02c45fa>] cfg80211_rfkill_poll+0x2a/0xc0 [cfg80211]
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523667]
> > [<ffffffff817a4d24>] rfkill_poll+0x24/0x50
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523670]
> > [<ffffffff81078aa3>] process_one_work+0x153/0x400
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523672]
> > [<ffffffff8107926b>] worker_thread+0x12b/0x4b0
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523674]
> > [<ffffffff81079140>] ? rescuer_thread+0x340/0x340
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523676]
> > [<ffffffff8107e4d9>] kthread+0xc9/0xe0
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523678]
> > [<ffffffff817ba23f>] ret_from_fork+0x1f/0x40
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523679]
> > [<ffffffff8107e410>] ? kthread_park+0x60/0x60
> > Jun 15 07:55:18 gruber-ubuntu-acer kernel: [193394.523681] ---[ end
> > trace c25c9fdececff7b4 ]---
>
> Does this patch help:
>
> ath9k: fix GPIO mask for AR9462 and AR9565ath-current
>
>
> https://git.kernel.org/cgit/linux/kernel/git/kvalo/ath.git/commit/?h=ath-current&id=e024111f6946f45cf1559a8c6fd48d2d0f696d07
>
> --
> Kalle Valo
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