Hi Vineet, I'm using drm-next (its currently based on 4.4-rc3).
Regarding linux-next DMA patches I assume you are talking about these 3 commits: * 19ab4d3aff0426058fe36aae4ac56320a6e4c6be * 8ee24f794c2dfff85930f25eab4f11a9bde7f920 * c27a81903ba596c879a45e3028135a4f37fb1837 Regards, C.Palminha -----Original Message----- From: Vineet Gupta Sent: quarta-feira, 2 de Dezembro de 2015 06:32 To: Carlos Palminha; linux-snps-arc@lists.infradead.org Cc: Alexey Brodkin Subject: Re: Non existing DMA functions in ARC: dma_alloc_attrs, dma_free_attrs, dma_mmap_attrs On Wednesday 02 December 2015 01:09 AM, Carlos Palminha wrote: > Hi guys, > > I'm bringing up a new ARC PGU driver for DRM framework with latest kernel > tree. > I'm using ARC AXS101 as a base and selected one the DRM required config: > HAVE_DMA_ATTRS due to some memory allocation helpers in DRM. > > I'm getting some errors with DMA functions not implemented in ARC: > dma_alloc_attrs, dma_free_attrs, dma_mmap_attrs > > Any clue? > > Regards, > C.Palminha > > --- > include/linux/dma-mapping.h: In function 'dma_alloc_writecombine': > include/linux/dma-mapping.h:283:2: error: implicit declaration of function > 'dma_alloc_attrs' [-Werror=implicit-function-declaration] > return dma_alloc_attrs(dev, size, dma_addr, gfp, &attrs); This is because ARC port current lacks support for dma_attr_t and associated helpers. There is a series in flight in linux-next, by Christoph, which already addresses that. You can either cherry-pick those or in the interim use the hack attached. P.S. Per your comment at top, I'm assuming you are working off of mainline 4.3 or 4.4 -Vineet _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
