<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hi all,</div><div><br></div><div>I am using EM7565 on my hardware, but sometimes report below qmi_wwan warning log, is there anyone also encounter this issue? and is there any side affect for modem usage?</div><div><br></div><div>If this is qmi_wwan driver issue, is there any solution for this?</div><div><br></div><div>Thanks in advance.</div><br><div>Dec 18 08:13:45 TM1000v3 user.info kernel: [ 3602.470871] NETDEV WATCHDOG: wwan2 (qmi_wwan): transmit queue 0 timed out</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.477766] ------------[ cut here ]------------</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.482368] WARNING: at /data/jack_amb/2_h2_sdk_svn/h2_sdk/ambarella/kernel/linux-4.4/net/sched/sch_generic.c:306</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.492594] Modules linked in: qmi_wwan(O) cdc_wdm(O) GobiSerial(O) usbnet(O) usbserial cdc_acm evdev 8812au(O) ir_rc6_decoder ir_nec_decoder ir_mce_kbd_decoder ir_xmp_decoder snd_usb_audio ir_jvc_decoder ir_sanyo_decoder ir</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.569986] </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.571469] CPU: 0 PID: 21961 Comm: real_enc Tainted: P O 4.4.13 #1</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.578833] Hardware name: Ambarella H2BUB Board (DT)</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.583863] task: ffffffc018d4bf00 ti: ffffffc016238000 task.ti: ffffffc016238000</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.591323] PC is at dev_watchdog+0x2d8/0x2e8</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.595655] LR is at dev_watchdog+0x2d8/0x2e8</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.599988] pc : [<ffffffc0003fb510>] lr : [<ffffffc0003fb510>] pstate: 00000145</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.607353] sp : ffffffc01623bcd0</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.610648] x29: ffffffc01623bcd0 x28: 0000000000000005 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.615933] x27: ffffffc0192bf000 x26: 00000000ffffffff </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.621220] x25: 0000000000000000 x24: ffffffc00073a000 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.626507] x23: ffffffc0006f2000 x22: ffffffc0192bf3a0 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.631793] x21: 0000000000000000 x20: ffffffc0192bf000 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.637080] x19: ffffffc013524400 x18: 0000000000000010 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.642366] x17: 0000007fab2ccb50 x16: 0000000001032078 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.647653] x15: ffffffc08074d627 x14: 0000000000000005 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.652940] x13: ffffffc00074d635 x12: ffffffc00074da62 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.658226] x11: 0000000005f5e0ff x10: ffffffc01623ba30 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.663513] x9 : 00000000ffffffd0 x8 : 756575712074696d </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.668800] x7 : ffffffc0006f3cc8 x6 : ffffffc00036b988 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.674086] x5 : 0000000000000000 x4 : 0000000000000000 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.679373] x3 : 0000000000000000 x2 : ffffffc02079cfd8 </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.684660] x1 : ffffffc016238000 x0 : 000000000000003d </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.689945] </div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.691420] ---[ end trace 8955d8055cd3faa5 ]---</div><div>Dec 18 08:13:45 TM1000v3 user.emerg kernel: [ 3602.696015] Call trace:</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.698446] [<ffffffc0003fb510>] dev_watchdog+0x2d8/0x2e8</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.703823] [<ffffffc0000e899c>] call_timer_fn.isra.8+0x24/0x88</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.709717] [<ffffffc0000e8b80>] run_timer_softirq+0x180/0x200</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.715526] [<ffffffc00009b4c8>] __do_softirq+0x110/0x228</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.720901] [<ffffffc00009b864>] irq_exit+0x84/0xd8</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.725756] [<ffffffc0000d78c8>] __handle_domain_irq+0x60/0xb0</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.731563] [<ffffffc000080d0c>] gic_handle_irq+0x54/0xa8</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.736935] Exception stack(0xffffffc01623bea0 to 0xffffffc01623bfc0)</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.743350] bea0: 0000000000000000 0000007fa8d00188 ffffffffffffffff 000000000048b0a8</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.751151] bec0: 0000000080000000 00000000004c4b40 0000000000000a1a 0000000000001680</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.758950] bee0: 0000000000000002 0000007fa8484a9e 0000007fa1cbda22 0000007fa8484aa0</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.766750] bf00: 00000000000000b4 00000000000000ff 00000000000000ff 00000000001b3dcc</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.774550] bf20: 000000005df9dfb8 00000000000af2af 0000000000000018 00000003e8000000</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.782351] bf40: 0000000000000001 002ac3fe06ace187 0000000001032078 0000007fab2ccb50</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.790151] bf60: 0000000000000003 0000000000001200 0000007fa8d00188 0000007fa8d00106</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.797951] bf80: 0000007fa8d00107 0000007fab3ca000 000000000048c194 0000000000000000</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.805750] bfa0: 0000000000000001 0000000000000000 0000007fa0e201e0 0000007fa0e1f450</div><div>Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.813552] [<ffffffc000084290>] el0_irq_naked+0x14/0x24</div><br><br><br><div style="position:relative;zoom:1">--<br><div> <div style="FONT-SIZE: 14px"> <div align="left"><strong><font color="#0000ff"><em>Best Regards,</em></font></strong></div> <div><strong><font color="#0000ff"><em>Dai,Lijin</em></font></strong></div></div></div><div style="clear:both"></div></div></div><br><br><span title="neteasefooter"><p> </p></span>