carl9170: handle traps from firmware loader

[karo-tx-linux.git] / drivers / net / wireless / ath / carl9170 / usb.c

diff --git a/drivers/net/wireless/ath/carl9170/usb.c b/drivers/net/wireless/ath/carl9170/usb.c
index 888152ce3eca98193b01147a827b4daee59c7ff3..307bc0ddff99091a1f224bb236013a1a90b5fa76 100644 (file)
--- a/drivers/net/wireless/ath/carl9170/usb.c
+++ b/drivers/net/wireless/ath/carl9170/usb.c
@@ -295,6 +295,13 @@ static void carl9170_usb_rx_irq_complete(struct urb *urb)
                goto resubmit;
        }
 
+       /*
+        * While the carl9170 firmware does not use this EP, the
+        * firmware loader in the EEPROM unfortunately does.
+        * Therefore we need to be ready to handle out-of-band
+        * responses and traps in case the firmware crashed and
+        * the loader took over again.
+        */
        carl9170_handle_command_response(ar, urb->transfer_buffer,
                                         urb->actual_length);