diff options
Diffstat (limited to 'drivers/net/wimax/i2400m/usb-rx.c')
| -rw-r--r-- | drivers/net/wimax/i2400m/usb-rx.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/wimax/i2400m/usb-rx.c b/drivers/net/wimax/i2400m/usb-rx.c index 22d127b..ba1b023 100644 --- a/drivers/net/wimax/i2400m/usb-rx.c +++ b/drivers/net/wimax/i2400m/usb-rx.c @@ -222,6 +222,26 @@ retry: goto retry; /* ZLP, just resubmit */ skb_put(rx_skb, read_size); 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"); + goto do_reset; + } + 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 */ @@ -283,6 +303,7 @@ out: error_reset: dev_err(dev, "RX: maximum errors in URB exceeded; " "resetting device\n"); +do_reset: usb_queue_reset_device(i2400mu->usb_iface); rx_skb = ERR_PTR(result); goto out; |