From a4708103adeaf5731c329b37b0a2b397f814c55c Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oliver@neukum.org>
Date: Thu, 2 Jul 2009 11:44:33 +0200
Subject: [PATCH] USB: suspend/resume support for usbtmc
a class driver should have suspend/resume. This makes sure we
don't see a virtual disconnect unnecessarily.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/class/usbtmc.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 0c9df97f6775..4f0858fbf980 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1087,11 +1087,24 @@ static void usbtmc_disconnect(struct usb_interface *intf)
kref_put(&data->kref, usbtmc_delete);
}
+static int usbtmc_suspend (struct usb_interface *intf, pm_message_t message)
+{
+ /* this driver does not have pending URBs */
+ return 0;
+}
+
+static int usbtmc_resume (struct usb_interface *intf)
+{
+ return 0;
+}
+
static struct usb_driver usbtmc_driver = {
.name = "usbtmc",
.id_table = usbtmc_devices,
.probe = usbtmc_probe,
- .disconnect = usbtmc_disconnect
+ .disconnect = usbtmc_disconnect,
+ .suspend = usbtmc_suspend,
+ .resume = usbtmc_resume,
};
static int __init usbtmc_init(void)