Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=36433127ae7a842482ba857f5ad3c431817a9542
Commit: 36433127ae7a842482ba857f5ad3c431817a9542
Parent: 741ec4e6d0b7780d29a63f908d6d21df425be365
Author: Oliver Neukum <[EMAIL PROTECTED]>
AuthorDate: Mon Apr 30 01:37:44 2007 -0700
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Tue May 22 23:45:48 2007 -0700
USB: address FIXME in usbnet w.r.t drivers claiming multiple interfaces
This fixes the issue of drivers claiming multiple interfaces. Operations
are stopped as soon as an interface is suspend and resumed only as
all interfaces have been resumed.
Signed-off-by: Oliver Neukum <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/net/usb/usbnet.c | 25 +++++++++++++++----------
drivers/net/usb/usbnet.h | 1 +
2 files changed, 16 insertions(+), 10 deletions(-)
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index f9cd42d..5b16d9a 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1252,20 +1252,23 @@ EXPORT_SYMBOL_GPL(usbnet_probe);
/*-------------------------------------------------------------------------*/
-/* FIXME these suspend/resume methods assume non-CDC style
- * devices, with only one interface.
+/*
+ * suspend the whole driver as soon as the first interface is suspended
+ * resume only when the last interface is resumed
*/
int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
{
struct usbnet *dev = usb_get_intfdata(intf);
- /* accelerate emptying of the rx and queues, to avoid
- * having everything error out.
- */
- netif_device_detach (dev->net);
- (void) unlink_urbs (dev, &dev->rxq);
- (void) unlink_urbs (dev, &dev->txq);
+ if (!dev->suspend_count++) {
+ /* accelerate emptying of the rx and queues, to avoid
+ * having everything error out.
+ */
+ netif_device_detach (dev->net);
+ (void) unlink_urbs (dev, &dev->rxq);
+ (void) unlink_urbs (dev, &dev->txq);
+ }
return 0;
}
EXPORT_SYMBOL_GPL(usbnet_suspend);
@@ -1274,8 +1277,10 @@ int usbnet_resume (struct usb_interface *intf)
{
struct usbnet *dev = usb_get_intfdata(intf);
- netif_device_attach (dev->net);
- tasklet_schedule (&dev->bh);
+ if (!--dev->suspend_count) {
+ netif_device_attach (dev->net);
+ tasklet_schedule (&dev->bh);
+ }
return 0;
}
EXPORT_SYMBOL_GPL(usbnet_resume);
diff --git a/drivers/net/usb/usbnet.h b/drivers/net/usb/usbnet.h
index 82db5a8..a3f8b9e 100644
--- a/drivers/net/usb/usbnet.h
+++ b/drivers/net/usb/usbnet.h
@@ -32,6 +32,7 @@ struct usbnet {
const char *driver_name;
wait_queue_head_t *wait;
struct mutex phy_mutex;
+ unsigned char suspend_count;
/* i/o info: pipes etc */
unsigned in, out;
-
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