[Rosegarden-user] Re: asfxload ( Fw: [Alsa-user] alsa-1.0.4 and asfxload )

[Steve C. <ste...@li...>]

The asfxload problem is entirely soluble.
Here's a message from alsa-user explaining the solution.
It worked for me.

----- Original Message ----- 
From: "holborn" <ho...@te...>
To: "Steve Conrad" <ste...@li...>
Sent: Friday, May 14, 2004 6:27 PM
Subject: Re: [Alsa-user] alsa-1.0.4 and asfxload


>
> Hi
>
> I currently use 2.6.6-mm1 kernel, memalloc.c is patched and works in this
> version....  but if you want patch your current version that's the
changes.
>
> If you dont have the current CVS downloaded maybe the most easy way is do
> editing directly the file memalloc.c in your kernel sources, then go
> to  /usr/src/linux/sound/core directory .... edit memalloc.c  deleting the
> "-" lines and adding the "+" lines.
> the @ lines are more or less the line you need to edit ...
> then recompile the kernel.
>
>
> Index: alsa-kernel/core/memalloc.c
> ===================================================================
> RCS file: /suse/tiwai/cvs/alsa/alsa-kernel/core/memalloc.c,v
> retrieving revision 1.30
> diff -u -r1.30 memalloc.c
> --- alsa-kernel/core/memalloc.c 7 Apr 2004 17:49:39 -0000       1.30
> +++ alsa-kernel/core/memalloc.c 13 Apr 2004 16:58:05 -0000
> @@ -137,14 +137,17 @@
>                                          dma_addr_t *dma_handle, int
flags)
>  {
>         void *ret;
> -       u64 dma_mask;
> +       u64 dma_mask, coherent_dma_mask;
>
>         if (dev == NULL || !dev->dma_mask)
>                 return dma_alloc_coherent(dev, size, dma_handle, flags);
>         dma_mask = *dev->dma_mask;
> +       coherent_dma_mask = dev->coherent_dma_mask;
>         *dev->dma_mask = 0xffffffff;    /* do without masking */
> +       dev->coherent_dma_mask = 0xffffffff;    /* do without masking */
>         ret = dma_alloc_coherent(dev, size, dma_handle, flags);
>         *dev->dma_mask = dma_mask;      /* restore */
> +       dev->coherent_dma_mask = coherent_dma_mask;     /* restore */
>         if (ret) {
>                 /* obtained address is out of range? */
>                 if (((unsigned long)*dma_handle + size - 1) & ~dma_mask) {
> @@ -154,8 +157,12 @@
>                 }
>         } else {
>                 /* wish to success now with the proper mask... */
> -               if (dma_mask != 0xffffffffUL)
> +               if (dma_mask != 0xffffffffUL) {
> +                       /* allocation with GFP_ATOMIC to avoid the long
stall
> */
> +                       flags &= ~GFP_KERNEL;
> +                       flags |= GFP_ATOMIC;
>                         ret = dma_alloc_coherent(dev, size, dma_handle,
> flags);
> +               }
>         }
>         return ret;
>  }