[alsa-devel] [PATCH] ASoC: fsl-ssi: fix SDMA starvation

Markus Pargmann mpa at pengutronix.de
Wed Nov 13 07:16:30 EST 2013


On Tue, Nov 12, 2013 at 02:17:34PM -0600, Timur Tabi wrote:
> On Tue, Nov 12, 2013 at 7:24 AM, Markus Pargmann <mpa at pengutronix.de> wrote:
> >
> > No, I don't have access on PowerPC hardware, so I didn't test it on
> > PowerPC.
> Can you change the code so that the interrupts are enabled only on
> i.MX?  On PowerPC, the interrupts are used only for debugging.

Why is this necessary? The interrupts were enabled for all
architectures before.

However, this patch is wrong as Jürgen mentioned, the SIER_FLAGS are
written to the SIER register after we enable the DMA enable bits which
leads to missing DMA enable bits at the end.
I created a new patch to cleanup the whole interrupt flag setup. I will
post it later.



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