[PATCH 2/7] USB: serial: handle suspend failure path correctly

[Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>]

This patch kills traffic even though type->suspend returns
failure inside usb_serial_suspend from system sleep context
because USB core ignores the failiure and lets system sleep
go ahread, so the serial URB traffic need to be killed
in this case.

Cc: Johan Hovold <jhovold-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Signed-off-by: Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
---
 drivers/usb/serial/usb-serial.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index a19ed74..04ad3d5 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1144,7 +1144,8 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message)
 		r = serial->type->suspend(serial, message);
 		if (r < 0) {
 			serial->suspending = 0;
-			goto err_out;
+			if (PMSG_IS_AUTO(msg))
+				goto err_out;
 		}
 	}
 
-- 
1.7.9.5

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