Re: Error -71 on device descriptor read/all

Paul Walmsley <[email protected]>
Newsgroups gmane.linux.usb.devel,gmane.linux.kernel
Message-ID <[email protected]>
On Tue, 19 Jun 2007, Oliver Neukum wrote:

> Am Dienstag, 19. Juni 2007 schrieb Chuck Ebbert:
>
>> Try disabling CONFIG_USB_SUSPEND
>>
>> [usb developers: what are the drawbacks of doing this?]
>
> Increased power consumption.

speaking of CONFIG_USB_SUSPEND, I've encountered at least one device -- a 
Canon EOS 5D camera -- that, after the bus suspends, must be powercycled 
in order to return the camera's interrupt endpoints to a functional state. 
How are these types of problems handled, currently?  Is this something for 
a blacklist?


- Paul

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