On Tue, 17 Jul 2007 09:10:18 +0200 Soeren Sonnenburg <[EMAIL PROTECTED]> wrote:
> the attached minimally intrusive patch is based on Matthew Garret's > patch 'Make appletouch shut up when it has nothing to say' patches (e.g. > http://lkml.org/lkml/2007/5/13/117): Matthews description follows / > second paragraph lists my additional changes. > > The appletouch geyser3 devices found in the Intel Macs (and possibly some > later > PPC ones?) send a constant stream of packets after the first touch. This > results in the kernel waking up around once every couple of milliseconds > to process them, making it almost impossible to spend any significant > period of time in C3 state on a dynamic HZ kernel. Sending the mode > initialization code makes the device shut up until it's touched again. > This patch does so after receiving 10 packets with no interesting > content. > > In addition it now empties the work queue via cancel_work_sync on module > exit, keeps all error checking and only reports BTN_LEFT presses if bit > 1 in the status byte (last byte in packet) is set. This fixes the random > left clicks issue. Furthermore it invalidates touchpad data before the > mode switch, which fixes the touchpad runs amok issue. Please feed this through scripts/checkpatch.pl and consider addressing all the things which it reports. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
