Re: [patch] IBM HDAPS accelerometer driver.

Dave Jones
2005-08-26T20:28:04Z

On Fri, Aug 26, 2005 at 03:29:15PM -0400, Robert Love wrote:
> On Fri, 2005-08-26 at 20:55 +0100, Alan Cox wrote:
>
> > I think that should be fixed before its merged.
>
> Let me be clear, it has an init routine that effectively probes for the
> device.
>
> It just lacks a simple quick non-invasive check.
>
> The driver will definitely fail to load on a laptop without the
> requisite hardware.

Poking IO ports on hardware where you don't have the device
can be fatal. What happens if I have something completely different
at io port 0x1600 ? (Thus satisfying your request_region() check).
accelerometer_init() then happily starts poking ports, and performing
all kinds of voodoo.

Dave