Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> writes: > On Wed, May 23, 2018 at 11:56:21AM +0200, Esben Haabendal wrote: >> From: Esben Haabendal <eha@xxxxxxxx> >> >> This fixes a race condition, where the DMAEN bit ends up being set after >> I2C slave has transmitted a byte following the dummy read. When that >> happens, an interrupt is generated instead, and no DMA request is generated >> to kickstart the DMA read, and a timeout happens after DMA_TIMEOUT (1 sec). >> >> Fixed by setting the DMAEN bit before the dummy read. > > Does this fix the problem or just narrow the race window? It should fix the problem. /Esben
