mirror of https://gitee.com/openkylin/linux.git
610df1d234
Check answers from USB stack and avoid re-sending the request multiple times if the device does not respond. This fixes the following problem, observed with a probably flaky adapter. [62108.732707] usb 1-3: new high-speed USB device number 5 using xhci_hcd [62108.914421] usb 1-3: New USB device found, idVendor=0b95, idProduct=7720 [62108.914463] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [62108.914476] usb 1-3: Product: AX88x72A [62108.914486] usb 1-3: Manufacturer: ASIX Elec. Corp. [62108.914495] usb 1-3: SerialNumber: 000001 [62114.109109] asix 1-3:1.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -110 [62114.109139] asix 1-3:1.0 (unnamed net_device) (uninitialized): Failed to send software reset: ffffff92 [62119.109048] asix 1-3:1.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -110 ... Since the USB timeout is 5 seconds, and the operation is retried 30 times, this results in [62278.180353] INFO: task mtpd:1725 blocked for more than 120 seconds. [62278.180373] Tainted: G W 3.18.0-13298-g94ace9e #1 [62278.180383] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. ... [62278.180957] kworker/2:0 D 0000000000000000 0 5744 2 0x00000000 [62278.180978] Workqueue: usb_hub_wq hub_event [62278.181029] ffff880177f833b8 0000000000000046 ffff88017fd00000 ffff88017b126d80 [62278.181048] ffff880177f83fd8 ffff880065a71b60 0000000000013340 ffff880065a71b60 [62278.181065] 0000000000000286 0000000103b1c199 0000000000001388 0000000000000002 [62278.181081] Call Trace: [62278.181092] [<ffffffff8e0971fd>] ? console_conditional_schedule+0x2c/0x2c [62278.181105] [<ffffffff8e094f7b>] schedule+0x69/0x6b [62278.181117] [<ffffffff8e0972e0>] schedule_timeout+0xe3/0x11d [62278.181133] [<ffffffff8daadb1b>] ? trace_timer_start+0x51/0x51 [62278.181146] [<ffffffff8e095a05>] do_wait_for_common+0x12f/0x16c [62278.181162] [<ffffffff8da856a7>] ? wake_up_process+0x39/0x39 [62278.181174] [<ffffffff8e095aee>] wait_for_common+0x52/0x6d [62278.181187] [<ffffffff8e095b3b>] wait_for_completion_timeout+0x13/0x15 [62278.181201] [<ffffffff8de676ce>] usb_start_wait_urb+0x93/0xf1 [62278.181214] [<ffffffff8de6780d>] usb_control_msg+0xe1/0x11d [62278.181230] [<ffffffffc037d629>] usbnet_write_cmd+0x9c/0xc6 [usbnet] [62278.181286] [<ffffffffc03af793>] asix_write_cmd+0x4e/0x7e [asix] [62278.181300] [<ffffffffc03afb41>] asix_set_sw_mii+0x25/0x4e [asix] [62278.181314] [<ffffffffc03b001d>] asix_mdio_read+0x51/0x109 [asix] ... Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| asix.h | ||
| asix_common.c | ||
| asix_devices.c | ||
| ax88172a.c | ||
| ax88179_178a.c | ||
| catc.c | ||
| cdc-phonet.c | ||
| cdc_eem.c | ||
| cdc_ether.c | ||
| cdc_mbim.c | ||
| cdc_ncm.c | ||
| cdc_subset.c | ||
| ch9200.c | ||
| cx82310_eth.c | ||
| dm9601.c | ||
| gl620a.c | ||
| hso.c | ||
| huawei_cdc_ncm.c | ||
| int51x1.c | ||
| ipheth.c | ||
| kalmia.c | ||
| kaweth.c | ||
| lan78xx.c | ||
| lan78xx.h | ||
| lg-vl600.c | ||
| mcs7830.c | ||
| net1080.c | ||
| pegasus.c | ||
| pegasus.h | ||
| plusb.c | ||
| qmi_wwan.c | ||
| r8152.c | ||
| rndis_host.c | ||
| rtl8150.c | ||
| sierra_net.c | ||
| smsc75xx.c | ||
| smsc75xx.h | ||
| smsc95xx.c | ||
| smsc95xx.h | ||
| sr9700.c | ||
| sr9700.h | ||
| sr9800.c | ||
| sr9800.h | ||
| usbnet.c | ||
| zaurus.c | ||