NETDEV WATCHDOG: usb0 (qmi_wwan): transmit queue 0 timed out

[Dan Williams]

On Thu, 2014-07-24 at 19:23 +0530, david preetham wrote:
> Hi,
> I was facing issue with huawei E392 device. kernel crash is happening after
> some time. when trying to send 10Mbps traffic. device is loaded with
> qmi_wwan driver. drivers are backported for kernel version 2.6.32. i
> searched some blogs it is telling that APCI issue. not able to clearly find
> the issue.

It's unlikely to be an ACPI issue, unless you have USB autosuspend
enabled and the device doesn't like it?  Try setting
".supports_autosuspend = 0" in qmi_wwan.c to see if that's the issue.

But more likely is a firmware or driver issue.  When this happens, can
you still talk to the modem with QMI?

Dan

> un 4 12:54:10 RuckusAP user.warn kernel: ------------[ cut here
> ]------------
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: WARNING: at
> /home/jenkins/workspace/SCG_3.0.0.0_ZF795x/linux/kernels/linux-2.6.32.24/net/sched/sch_generic.c:261
> 
> dev_watchdog+0x164/0x260()
> 
> Jun 4 12:54:10 RuckusAP user.info kernel: NETDEV WATCHDOG: usb0 (qmi_wwan):
> transmit queue 0 timed out
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: Modules linked in: qmi_wwan
> ar_cdc_wdm option usbserial cdc_ether usbnet wispr_http(P) br_dnat(P) ip_gre
> 
> v54smartmedia(P) br_dhcp(P) br_pif(P) br_ci ath_dual wlan_u(P) wlan_acl
> wlan_xauth wlan_ccmp wlan_wep wlan_tkip wlan_scan_sta wlan_scan_rks
> ath_spectral(P)
> 
> ath_dfs(P) ath_rate_v54beamflex(P) ath_hal(P) wlan athrs_gmac rks_acl
> rks_dns(P) rudb(P) rks_ioctl
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: Call Trace:
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<80088a7c>] dump_stack+0x8/0x34
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<800a9bf4>]
> warn_slowpath_common+0x70/0xb0
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<800a9c74>]
> warn_slowpath_fmt+0x24/0x30
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<802649dc>]
> dev_watchdog+0x164/0x260
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<800b43b8>]
> run_timer_softirq+0x14c/0x1d8
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<800afd2c>]
> __do_softirq+0xb4/0x14c
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<800afe0c>] do_softirq+0x48/0x6c
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<8008050c>] ret_from_irq+0x0/0x4
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<8008ddcc>]
> r4k_wait_irqoff+0x20/0x24
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<8008e800>] cpu_idle+0x24/0x44
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: [<803a5a5c>]
> start_kernel+0x34c/0x368
> 
> Jun 4 12:54:10 RuckusAP user.warn kernel: ---[ end trace 5c960849b18c9e51
> ]---
> 
> Jun 4 12:54:19 RuckusAP daemon.info hostapd: wlan0: STA 1c:ab:a7:40:e9:ef
> IEEE 802.11: associated
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