diff options
Diffstat (limited to 'drivers/net/wimax/i2400m/usb-tx.c')
| -rw-r--r-- | drivers/net/wimax/i2400m/usb-tx.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/wimax/i2400m/usb-tx.c b/drivers/net/wimax/i2400m/usb-tx.c index 6cdf0036a14..c65b9979f87 100644 --- a/drivers/net/wimax/i2400m/usb-tx.c +++ b/drivers/net/wimax/i2400m/usb-tx.c @@ -115,6 +115,28 @@ retry: result = -EIO; } break; + case -EPIPE: + /* + * Stall -- maybe the device is choking with our + * requests. Clear it and give it some time. If they + * happen to often, it might be another symptom, so we + * reset. + * + * No error handling for usb_clear_halt(0; if it + * works, the retry works; if it fails, this switch + * does the error handling for us. + */ + if (edc_inc(&i2400mu->urb_edc, + 10 * EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) { + dev_err(dev, "BM-CMD: too many stalls in " + "URB; resetting device\n"); + usb_queue_reset_device(i2400mu->usb_iface); + /* fallthrough */ + } else { + usb_clear_halt(i2400mu->usb_dev, usb_pipe); + msleep(10); /* give the device some time */ + goto retry; + } case -EINVAL: /* while removing driver */ case -ENODEV: /* dev disconnect ... */ case -ENOENT: /* just ignore it */ |