Messages in this thread | | | Date | Sat, 23 Mar 2013 19:57:40 -0400 (EDT) | Subject | Re: [PATCH] Fix IXP4xx coherent allocations | From | David Miller <> |
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From: Krzysztof Halasa <khc@pm.waw.pl> Date: Sat, 23 Mar 2013 20:35:46 +0100
> ARM core code currently requires coherent DMA mask to be set. Make sure > we limit PCI devices to 64 MiB while allowing on-chip devices to access > the whole 4 GiB address space. > > This fixes a v3.7+ regression which broke IXP4xx built-in network devices. > > Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
This requirement is not reasonable.
The DMA API documentation clearly states what the default must be, and what drivers are guarenteed will be the default. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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