On Mon, Nov 16, 2015 at 09:38:40PM +0100, Lukas Wunner wrote: > From: Matthew Garrett <matthew.garrett at nebula.com> > > Registering the handler after both GPUs will trigger a DDC switch for > connector reprobing. This will oops if apple_gmux_data hasn't already > been assigned. Reorder the code to do that. > > [Lukas: More generally, this commit fixes a race condition that > is triggered by invoking a handler callback between the call to > vga_switcheroo_register_handler() and the assignment of > apple_gmux_data.] > > Tested-by: Pierre Moreau <pierre.morrow at free.fr> > [MBP 5,3 2009 nvidia MCP79 + G96 pre-retina 15"] > Tested-by: Paul Hordiienko <pvt.gord at gmail.com> > [MBP 6,2 2010 intel ILK + nvidia GT216 pre-retina 15"] > Tested-by: Lukas Wunner <lukas at wunner.de> > [MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina 15"] > Tested-by: William Brown <william at blackhats.net.au> > [MBP 8,2 2011 intel SNB + amd turks pre-retina 15"] > Tested-by: Bruno Bierbaumer <bruno at bierbaumer.net> > [MBP 11,3 2013 intel HSW + nvidia GK107 retina 15"] > > Signed-off-by: Matthew Garrett <matthew.garrett at nebula.com> > Reviewed-by: Lukas Wunner <lukas at wunner.de> > Signed-off-by: Lukas Wunner <lukas at wunner.de>
My apologies for the delay. Thank you for the testing data and submitting. I have queued this to testing. Pending success on 0-day, it will land in linux-next shortly (tomorrow most likely) where I hope it will receive additional testing. -- Darren Hart Intel Open Source Technology Center