[PATCH] kernel: Fix ath79 DSP exception at bootup

[Stefan Lippers-Hollmann]

Hi

On 2020-07-03, Hauke Mehrtens wrote:
> This resolves a hazard between a mtc0 and a mfc0 instruction after
> activating the DSP support. Without this fix the CPU could use the old
> value again and the DSP support would not be active.
>
> Fixes: FS#2928
> Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
[...]

I can confirm that this works on the TP-Link TL-WDR3600 and TL-WDR4300,
tested on top of r13676-g9858a8c582 with kernel 5.4.50 and this patch.
Thanks a lot for looking into this.

Tested-by: Stefan Lippers-Hollmann <s.l-h at gmx.de> [ath79/tl-wdr3600; ath79/tl-wdr4300]

Regards
	Stefan Lippers-Hollmann