On Fri, 01 Mar 2013 11:58:29 +0800, Bo Shen wrote: > Hi Jean, > > On 2/28/2013 19:01, Jean Delvare wrote: > > GPIOs may not be available immediately when i2c-gpio looks for them. > > Implement support for deferred probing so that probing can be > > attempted again later when GPIO pins are finally available. > > > > Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx> > > Cc: Haavard Skinnemoen <hskinnemoen@xxxxxxxxx> > > --- > > A little more changes were needed than I initially thought, because we > > want to check the pins before we allocate memory. Otherwise we would > > have a possibly large number of memory allocation and freeing cycles > > until GPIO pins are finally available. > > > > I wrote this quite some time ago already, but I do not have any system > > to test it. I would appreciate if one or more users of the i2c-gpio > > driver could give it a try and confirm it works as intended, or at > > least doesn't introduce any regression. Thanks. > > > > drivers/i2c/busses/i2c-gpio.c | 75 ++++++++++++++++++++++++++++-------------- > > 1 file changed, 50 insertions(+), 25 deletions(-) > > Test on at91sam9g20ek_2mmc board, booting with non-dt kernel and > dt-kernel base on Linux-3.8. Both are OK. > > Tested-by: Bo Shen <voice.shen@xxxxxxxxx> Thanks Bo, this is very appreciated! -- Jean Delvare -- 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
