From: qianfan Zhao <qianfanguijin@xxxxxxx>
Kernel print such flood message when the modem dead (the device is not
disconnected but it doesn't response anything):
option1 ttyUSB1: usb_wwan_indat_callback: nonzero status: -71 on endpoint 05.
option1 ttyUSB1: usb_wwan_indat_callback: nonzero status: -71 on endpoint 05.
...
So treat any error that doesn't recognized as a fatal error and do not
resubmit again.
Signed-off-by: qianfan Zhao <qianfanguijin@xxxxxxx>
---
drivers/usb/serial/usb_wwan.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index cb01283d4d15..daa3e2beff0f 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -227,8 +227,7 @@ static void usb_wwan_indat_callback(struct urb *urb)
__func__, status, endpoint);
/* don't resubmit on fatal errors */
- if (status == -ESHUTDOWN || status == -ENOENT)
- return;
+ return;
} else {
if (urb->actual_length) {
tty_insert_flip_string(&port->port, data,
--
2.25.1
