On 18:25 Tue 16 Oct , Bo Shen wrote: > Hi J, > > On 10/16/2012 16:39, Jean-Christophe PLAGNIOL-VILLARD wrote: > >On 11:13 Tue 16 Oct , Bo Shen wrote: > >>Hi J, > >> > >>On 10/15/2012 23:02, Jean-Christophe PLAGNIOL-VILLARD wrote: > >>>On 17:30 Mon 15 Oct , Bo Shen wrote: > >>>>The i2c core driver will turn the platform device ID to busnum > >>>>When using platfrom device ID as -1, it means dynamically assigned > >>>>the busnum. When writing code, we need to make sure the busnum, > >>>>and call i2c_register_board_info(int busnum, ...) to register device > >>>>if using -1, we do not know the value of busnum > >>>> > >>>>In order to solve this issue, set the platform device ID as a fix number > >>>>Here using 0 to match the busnum used in i2c_regsiter_board_info() > >>>> > >>>>Signed-off-by: Bo Shen <voice.shen@xxxxxxxxx> > >>>>--- > >>> > >>>can you check when this append for the first time to schedule a patch for stable too > >> > >>OK. I will resend it and add linux stable into the cc list. > >no this not how it work > > > >I ask you to check which patch add the regression and then when this is > >applied in the kernel we will request greg to apply it too to the stable > > The code is using id = -1 appear 4 years ago. And after dig, I don't > find which patch cause this the regression. so use git bisect to find the commit responsible Best Regards, J. -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
