On Mon, Apr 27, 2020 at 12:50:29PM +0200, Thierry Reding wrote: > On Mon, Apr 27, 2020 at 12:35:53PM +0200, Wolfram Sang wrote: > > On Mon, Apr 27, 2020 at 12:07:19PM +0300, Dmitry Osipenko wrote: > > > 27.04.2020 11:44, Wolfram Sang пишет: > > > > > > > >> Wolfram, can you revert the following two patches for v5.7, please? > > > >> > > > >> 8814044fe0fa i2c: tegra: Synchronize DMA before termination > > > > > > This patch has nothing to do with your trouble, why do you want to > > > revert it? > > > > I'll wait some more before pushing out, so you can discuss it. > > Okay, let me run a quick test with that second patch still applied to > make sure it really is harmless. Alright, I tested v5.7-rc3 with this patch reverted: a900aeac2537 i2c: tegra: Better handle case where CPU0 is busy for a long time and the results came back positive, so I think we can leave patch: 8814044fe0fa i2c: tegra: Synchronize DMA before termination in. But then again, I see that Dmitry posted this yesterday: https://lkml.org/lkml/2020/4/26/481 which seems like it would be related to this and potentially be a follow-up fix for some corner cases? So I'm not sure how well this whole set has been tested yet. Maybe a better solution would be for the DMA synchronization patch to go into the 5.8 queue instead to make sure we get more testing cycles. Thierry
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