On 12/22/2016 10:58 PM, Aaro Koskinen wrote: > Hi, > > On Sun, Dec 18, 2016 at 12:01:21AM +0200, Aaro Koskinen wrote: >> OMAP MMC is silently missing when booting v4.9 on Nokia 770 (OMAP1). >> >> Bisected to: >> >> commit 2d1a9a946faebfedd660a1f1c2b90984fff41f91 >> Author: Peter Ujfalusi <peter.ujfalusi@xxxxxx> >> Date: Wed Jul 20 11:50:29 2016 +0300 >> >> dmaengine: omap-dma: Dynamically allocate memory for lch_map >> >> Reveting the commit makes MMC to appear and work again... > > This commit basically reduces dma_requests count to 17 (from 127) > on OMAP1. > > This cannot be correct, since OMAP1 MMC is using requests (from > omap1_init_mmc): > > rx_req = 22; > tx_req = 21; > [...] > rx_req = 55; > tx_req = 54; > > MMC probe will fail because omap_dma_filter_fn() will fail during > dma_request_chan(). > > I think 2d1a9a946faebfedd660a1f1c2b90984fff41f91 should be reverted. > I cannot anymore boot my 770 with >= 4.9 kernel. I rather fix this instead of reverting the commit, I will send a patch today for this. -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
