Bug#671292: [PATCH v2 1/1] HID: logitech: read all 32 bits of report type bitfield
On Fri, 11 May 2012, Nestor Lopez Casado wrote:
> From: Jonathan Nieder <jrnieder@gmail.com>
>
> On big-endian systems (e.g., Apple PowerBook), trying to use a
> logitech wireless mouse with the Logitech Unifying Receiver does not
> work with v3.2 and later kernels. The device doesn't show up in
> /dev/input. Older kernels work fine.
>
> That is because the new hid-logitech-dj driver claims the device. The
> device arrival notification appears:
>
> 20 00 41 02 00 00 00 00 00 00 00 00 00 00 00
>
> and we read the report_types bitfield (02 00 00 00) to find out what
> kind of device it is. Unfortunately the driver only reads the first 8
> bits and treats that value as a 32-bit little-endian number, so on a
> powerpc the report type seems to be 0x02000000 and is not recognized.
>
> Even on little-endian machines, connecting a media center remote
> control (report type 00 01 00 00) with this driver loaded would
> presumably fail for the same reason.
Applied, thanks.
--
Jiri Kosina
SUSE Labs
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