On Mon, Mar 27, 2000 at 12:46:05PM -0800, Johannes Erdfelt wrote:
> I appear to have a device (hub) which refuses to send back a descriptor
> dump after the device had gone through the set address/set configuration
> stage.
>
> This makes it difficult to grab a complete descriptor dump in userspace.
>
> Would anyone have any objections to caching the complete descriptor dump
> and returning it via read() in usbdevfs?
>
I sure don't. I don't want the bus traffic on Linux to look like Win??
which keeps asking for the descriptors, even after it just asked for
them.
Besides, I thought that we used to have all that information around
anyway (except for the string descriptors), but that was a long time
ago, and I haven't really poked around in the usb core in a while, so
things have probably changed.
greg k-h
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