Hi Peter On Mon, Oct 05, 2015 at 10:45:29AM +0200, Peter Rosin wrote: > On 2015-10-03 01:05, Peter Rosin wrote:
[...] > Ok, I found the culprit, and I double and triple checked it this time... > > If I move to the very latest on the linux-3.18-at91 branch, the bug is > there too. Which made it vastly more palatable to bisect the bug. > > The offender (in the 4.2 kernel) is 93563a6a71bb69dd324fc7354c60fb05f84aae6b > "i2c: at91: fix a race condition when using the DMA controller" > which is far more understandable. Ao, adding Cyrille Pitchen to the Cc list. > Thanks for the bisecting effort. I am currently at ELCE where I have met someone with the same kind of issue. Is it easily reproducible? It doesn't seem to be the case for him. I'll have a look once back. > If I add that patch on top of my previously working tree, it behaves just > as newer kernels, i.e. equally bad. The patch doesn't revert cleanly, but > reverting the patch and quick-n-dirty-fixing the conflict on vanilla 4.2 > makes the problem go away. > > I have attached what I actually reverted. > > Cheers, > Peter > Ludovic -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/