[linux-pm] [PATCH] get USB suspend to work again on 2.6.17-mm1

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Greg KH napsal(a):
> Mattai and Jiri, can you try the patch below to see if it fixes the USB
> suspend problem you are seeing with 2.6.17-mm1?
> 
> David, we really should not be caring about what the children of a USB
> device is doing here, as who knows what type of "device" might hang off
> of a struct usb_device.  This patch is just a band-aid around this area,
> until Alan's patches fix up everything "properly" :)
> 
> thanks,
> 
> greg k-h
> 
> -----------------------------
> Subject: USB: get USB suspend to work again
> 
> Yeah, it's a hack, but it is only temporary until Alan's patches
> reworking this area make it in.  We really should not care what devices
> below us are doing, especially when we do not really know what type of
> devices they are.  This patch relies on the fact that the endpoint
> devices do not have a driver assigned to us.
> 
> Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
> 
> ---
>  drivers/usb/core/usb.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> --- gregkh-2.6.orig/drivers/usb/core/usb.c
> +++ gregkh-2.6/drivers/usb/core/usb.c
> @@ -991,6 +991,8 @@ void usb_buffer_unmap_sg (struct usb_dev
>  
>  static int verify_suspended(struct device *dev, void *unused)
>  {
> +	if (dev->driver == NULL)
> +		return 0;
>  	return (dev->power.power_state.event == PM_EVENT_ON) ? -EBUSY : 0;
>  }
>  

Yeah, it works just fine.

regards,
-- 
Jiri Slaby         www.fi.muni.cz/~xslaby
\_.-^-._   jirislaby at gmail.com   _.-^-._/
B67499670407CE62ACC8 22A032CC55C339D47A7E



[Index of Archives]     [Linux ACPI]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [CPU Freq]     [Kernel Newbies]     [Fedora Kernel]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux