Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever

From: Greg KH (greg@kroah.com)
Date: Wed Jul 30 2003 - 18:28:43 EST


On Tue, Jul 29, 2003 at 04:17:03PM +0100, Philip Graham Willoughby wrote:
> Hi all,
>
> This patch adds an abstraction layer for programmable LED devices,
> hardware drivers for the Status LEDs found on some Intel PIIX4E based
> server hardware (notably the ISP1100 1U rackmount server) and LEDs wired
> to the parallel port data lines.

Some minor comments:
        - read Documentation/CodingStyle and apply it to your code.
        - fix up the usages of the MOD_* functions. Get rid of the ones
          for the file_ops and have the core increment the count of the
          drivers before the core calls them.
        - please do not use ioctls. They are hell for 64bit kernels.
          Use either a filesystem for your subsystem, or sysfs.
        - try doing this for 2.6 first if you want any chance at all to
          get it into the main kernel trees.

Good luck,

greg k-h
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