Re: [linux-usb-devel] [PATCH] visor: Fix Oops on disconnect

nardelli
2004-05-21T17:08:47Z

Alan Stern wrote:
> On Fri, 21 May 2004, nardelli wrote:
>
>
>>The api for usb_control_msg says, 'If successful, it returns 0, othwise a
>>negative error number', and I didn't see any other way to figure out how
>>much data was being returned.
>
>
> In the current kernel sources, the kerneldoc for usb_control_msg() says
> "If successful, it returns the number of bytes transferred, otherwise a
> negative error number."
>

Sorry, I was looking at dated api docs at kernelnewbies.org. I'll use
the size returned from usb_control_msg() instead of memset().