On Sun, 28 Aug 2016, Geert Uytterhoeven wrote:
> Hi Finn,
>
> On Sat, Aug 27, 2016 at 4:30 AM, Finn Thain
> wrote:
> > Large PIO transfers are broken up into chunks to try to avoid
> > disabling local IRQs for long periods. But IRQs are still disabled for
> > too long and this causes SCC FIF
Hi Finn,
On Sat, Aug 27, 2016 at 4:30 AM, Finn Thain wrote:
> Large PIO transfers are broken up into chunks to try to avoid disabling
> local IRQs for long periods. But IRQs are still disabled for too long
> and this causes SCC FIFO overruns during serial port transfers. This
> patch fixes the pr
Large PIO transfers are broken up into chunks to try to avoid disabling
local IRQs for long periods. But IRQs are still disabled for too long
and this causes SCC FIFO overruns during serial port transfers. This
patch fixes the problem by halving the PIO chunk size.
Testing with mac_scsi shows that
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