linux-kernel - Re: [PATCH] Logitech G13 driver 0.0.2

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Message-ID: <80c4f5c2525b7de126db6ad51bcb39c9.squirrel@intranet.cs.nmsu.edu>
Date:	Wed, 6 Jan 2010 15:55:10 -0700
From:	"Rick L. Vinyard, Jr." <rvinyard@...nmsu.edu>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, felipe.balbi@...ia.com,
	krzysztof.h1@...pl, linux-usb@...r.kernel.org, oliver@...kum.org,
	linux-input@...r.kernel.org, jkosina@...e.cz
Subject: Re: [PATCH] Logitech G13 driver 0.0.2

Andrew Morton wrote:
> On Mon, 14 Dec 2009 15:44:46 -0700
> "Rick L. Vinyard Jr." <rvinyard@...nmsu.edu> wrote:
>
>> his is a driver for the Logitech G13 gamepad, and contains three
>> key parts. In the USB reports the device identifies itself as a
>> HID, and as a result this driver is under the HID framework.
>>
>> There are two primary sub-components to this driver; an input
>> device and a framebuffer device.
>>
>> Although identified as a HID, the device does not support standard
>> HID input messages. As a result, a sub-input device is allocated and
>> registered separately in g13_probe(). The raw events are monitored
>> and key presses/joystick activity is reported through the input device
>> after referencing an indexed keymap.
>>
>> Additionally, this device contains a 160x43 monochrome LCD display.
>> A registered framebuffer device manages this display. The design
>> of this portion of the driver was based on the design of the
>> hecubafb driver with deferred framebuffer I/O since there is
>> no real memory to map.
>
> I get this from x86_64 allmodconfig:
>
> drivers/hid/hid-g13.o:(.rodata+0x0): multiple definition of
> `__mod_hid_device_table'
> drivers/hid/hid-lg.o:(.rodata+0x0): first defined here
> /opt/crosstool/gcc-4.0.2-glibc-2.3.6/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-ld:
> Warning: size of symbol `__mod_hid_device_table' changed from 552 in
> drivers/hid/hid-lg.o to 48 in drivers/hid/hid-g13.o
> drivers/hid/hid-g13.o: In function `init_module':
> hid-g13.c:(.init.text+0x0): multiple definition of `init_module'
> drivers/hid/hid-lg.o:hid-lg.c:(.init.text+0x0): first defined here
> drivers/hid/hid-g13.o: In function `cleanup_module':
> hid-g13.c:(.exit.text+0x0): multiple definition of `cleanup_module'
> drivers/hid/hid-lg.o:hid-lg.c:(.exit.text+0x0): first defined here
>
> Confused.
>

I think the symbol conflicts are due to the fact that I was building it
alongside the Logitech stuff and was adding it to logitech-objs. But,
logitech-objs is really Logitech Force Feedback stuff.

I'll submit a patch shortly that fixes this + other stuff.

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