From: Oliver Neukum <oliver@neukum.org>
Date: Fri, 6 Feb 2009 17:06:43 +0000 (+0100)
Subject: USB: serial: use generic method if no alternative is provided in usb serial layer
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c49cfa9170256295f4a0fd1668a2411fc05d6b33;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

USB: serial: use generic method if no alternative is provided in usb serial layer

This patch makes use of the generic method if a serial driver provides
no implementation. This simplifies implementing suspend/resume support
in serial drivers.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index c6aaa6dc7564..18f940847316 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1085,12 +1085,15 @@ EXPORT_SYMBOL(usb_serial_suspend);
 int usb_serial_resume(struct usb_interface *intf)
 {
 	struct usb_serial *serial = usb_get_intfdata(intf);
+	int rv;
 
 	serial->suspending = 0;
 	if (serial->type->resume)
-		return serial->type->resume(serial);
+		rv = serial->type->resume(serial);
+	else
+		rv = usb_serial_generic_resume(serial);
 
-	return 0;
+	return rv;
 }
 EXPORT_SYMBOL(usb_serial_resume);