Hi, On Fri, Nov 23, 2018 at 02:35:04PM +0200, Peter Ujfalusi wrote: > On 22/11/2018 17.12, Russell King - ARM Linux wrote: > > I'm also not sure about this: > > > > if (cpu_is_omap15xx()) > > end++; > > > > in dma_dest_len() - is that missing from the omap-dma driver? It looks > > like a work-around for some problem on OMAP15xx, but I can't make sense > > about why it's in the UDC driver rather than the legacy DMA driver. > > afaik no other legacy drivers were doing similar thing, this must be > something which is needed for the omap_udc driver to fix up something? Here's the patch that added it: https://marc.info/?l=linux-omap&m=119634396324221&w=2 "Make DMA-OUT behave on the 1510 ... the 1510 CPC register was just off-by-one with respect to the 1611 CDAC" A.
