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Date: Mon, 15 Dec 2014 09:04:04 -0500 From: Jonathan Corbet <corbet@....net> To: Geert Uytterhoeven <geert@...ux-m68k.org> Cc: Mauro Carvalho Chehab <mchehab@....samsung.com>, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH/RESEND] [media] VIDEO_CAFE_CCIC should select VIDEOBUF2_DMA_SG On Mon, 15 Dec 2014 14:55:37 +0100 Geert Uytterhoeven <geert@...ux-m68k.org> wrote: > If VIDEO_CAFE_CCIC=y, but VIDEOBUF2_DMA_SG=m: > > drivers/built-in.o: In function `mcam_v4l_open': > mcam-core.c:(.text+0x1c2e81): undefined reference to `vb2_dma_sg_memops' > mcam-core.c:(.text+0x1c2eb0): undefined reference to `vb2_dma_sg_init_ctx' > drivers/built-in.o: In function `mcam_v4l_release': > mcam-core.c:(.text+0x1c34bf): undefined reference to `vb2_dma_sg_cleanup_ctx' I've been mildly resistant to this because I've never figured out how such a configuration can come about. The Cafe chip only appeared in the OLPC XO-1 and cannot even come close to doing S/G I/O. So this patch robs a bit of memory for no use on a platform that can ill afford it. OTOH, the number of people building contemporary kernels for the XO-1 has got to be pretty small. So, in the interest of mollifying randconfig users out there, you can add my: Acked-by: Jonathan Corbet <corbet@....net> jon -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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