-------- Original-Nachricht --------
Datum: Thu, 29 Jun 2006 11:27:15 +0200
Von: Takashi Iwai <[email protected]>
An: Gerhard Pircher <[email protected]>
Betreff: Re: [Alsa-devel] RFC: dma_mmap_coherent() for powerpc/ppc architecture and ALSA?
> At Wed, 28 Jun 2006 22:27:53 +0200,
> Gerhard Pircher wrote:
> >
> > Hi,
> >
> > It took a little bit longer to integrate the patch, as I didn't figure
> out first how to implement the __dma_mmap_coherent() function for PPC
> systems with CONFIG_NOT_COHERENT_CACHE defined. :)
> >
> > Unfortunately my system still crashes within snd_pcm_mmap_data_nopage()
> > (sound/core/pcm_native.c), as you can see below. I guess it tries to
> remap
> > a DMA buffer allocated by the not cache coherent DMA memory allocation
> > function in arch/ppc/kernel/dma-mapping.c.
>
> Strange, nopage will be never called if you apply my patch and modify
> to use dma_mmap_coherent().
>
>
> Takashi
>
That's indeed strange! I'm sure that the new code is called by the sound drivers. Should snd_pcm_mmap_data_nopage() not be used at all anymore, or are there any cases that could still trigger a call of snd_pcm_mmap_data_nopage()?
Gerhard
--
Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!
Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
