Hi,
I am implementing reset_resume() in the sierra driver. It seems to me
that the best way to do that would be to simulate a sudden loss of
connection. To do so I need to know what a sierra device does if the
connection simply vanishes. I want to feed emulated error messages
to the tty layer to make NetworkManager deal nicely with this situation.
Regards
Oliver
From 11ca5b178d7cad93b4d6e0914e21a422fd64ef92 Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oliver@xxxxxxxxxx>
Date: Tue, 2 Feb 2010 14:33:06 +0100
Subject: [PATCH] usb:sierra:implement reset_resume()
This implements a primitive form of reset_resume()
that just pretends nothing has happened.
Signed-off-by: Oliver Neukum <oliver@xxxxxxxxxx>
---
drivers/usb/serial/sierra.c | 29 ++++++++++++++++++++++-------
1 files changed, 22 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index ac1b644..f15dc66 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -303,14 +303,17 @@ static struct usb_device_id id_table [] = {
};
MODULE_DEVICE_TABLE(usb, id_table);
+static int sierra_reset_resume(struct usb_interface *intf);
+
static struct usb_driver sierra_driver = {
- .name = "sierra",
- .probe = usb_serial_probe,
- .disconnect = usb_serial_disconnect,
- .suspend = usb_serial_suspend,
- .resume = usb_serial_resume,
- .id_table = id_table,
- .no_dynamic_id = 1,
+ .name = "sierra",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .suspend = usb_serial_suspend,
+ .resume = usb_serial_resume,
+ .reset_resume = sierra_reset_resume,
+ .id_table = id_table,
+ .no_dynamic_id = 1,
.supports_autosuspend = 1,
};
@@ -1060,9 +1063,21 @@ static int sierra_resume(struct usb_serial *serial)
return ec ? -EIO : 0;
}
+
+static int sierra_reset_resume(struct usb_interface *intf)
+{
+ struct usb_serial *serial = usb_get_intfdata(intf);
+ int rv;
+
+ serial->suspending = 0;
+ rv = sierra_resume(serial);
+ return rv;
+}
+
#else
#define sierra_suspend NULL
#define sierra_resume NULL
+#define sierra_reset_resume NULL
#endif
static struct usb_serial_driver sierra_device = {
--
1.6.4.2
