Alan Stern schrieb:
On Tue, 6 Dec 2005, Carl-Daniel Hailfinger wrote:
since I switched to 2.6.15-rc2-git6, my machine is not able to suspend
anymore if my USB printer is plugged in. The problem is reproducible.
usb 1-2: new full speed USB device using uhci_hcd and address 3
drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 3 if 0 alt 0
proto 2 vid 0x04E8 pid 0x3242
usbcore: registered new driver usblp
drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver
PM: Preparing system for mem sleep
Stopping tasks: ==================================================|
usblp 1-2:1.0: no suspend?
Could not suspend device 1-2: error -16
Some devices failed to suspend
Restarting tasks... done
Earlier kernels (2.6.14.2 and before) worked just fine.
A first search suggests this problem was introduced between
2.6.14 and 2.6.15-rc2-git6. Should I try to narrow it down further?
No need. Try the patch below and see if it helps.
Alan Stern
Index: linux-2.6.15-rc3/drivers/usb/core/usb.c
===================================================================
--- linux-2.6.15-rc3.orig/drivers/usb/core/usb.c
+++ linux-2.6.15-rc3/drivers/usb/core/usb.c
@@ -1414,8 +1414,10 @@ static int usb_generic_suspend(struct de
}
if ((dev->driver == NULL) ||
- (dev->driver_data == &usb_generic_driver_data))
+ (dev->driver_data == &usb_generic_driver_data)) {
+ dev->power.power_state.event = PM_EVENT_FREEZE;
return 0;
+ }
intf = to_usb_interface(dev);
driver = to_usb_driver(dev->driver);
Sorry, this patch didn't help. Anthing else I can try?
Regards,
Carl-Daniel
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