| To: | Atsushi Nemoto <anemo@mba.ocn.ne.jp> |
|---|---|
| Subject: | Re: Ensoniq ES1371 problem on Cobalt MIPS |
| From: | Martin Michlmayr <tbm@cyrius.com> |
| Date: | Tue, 24 Jan 2006 16:06:30 +0000 |
| Cc: | linux-mips@linux-mips.org, t.sailer@alumni.ethz.ch, perex@suse.cz |
| In-reply-to: | <20060124.132832.37533152.nemoto@toshiba-tops.co.jp> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20060124030725.GA14063@deprecation.cyrius.com> <20060124.132832.37533152.nemoto@toshiba-tops.co.jp> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.5.11 |
* Atsushi Nemoto <anemo@mba.ocn.ne.jp> [2006-01-24 13:28]: > ALSA uses virt_to_page() but this is not work for buffers returned by > pci_alloc_consistent() on MIPS with CONFIG_DMA_NONCOHERENT. We can > make virt_to_page() bulletproof but it might have some performance > impact. It seems API something like dma_to_page() should be > introduced. Can you start a discusion about this on lkml? I'd assume some other platforms have similar problems. > Anyway, here is my ugly patch against 2.6.15. It would fix some > problems with ALSA on noncoherent MIPS platform. This patch didn't really improve anything. -- Martin Michlmayr http://www.cyrius.com/ |
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