svn commit: r259748 - releng/10.0/sys/arm/at91

[John-Mark Gurney]

Warner Losh wrote this message on Sun, Dec 22, 2013 at 22:31 +0000:
>   The real fix is to use cngrab/cnungrab function pointers to disable
>   RXRDY interrupts while grabbed. However, that touches the MI uart
>   code, so was disallowed for 10.0 due to the lateness of the hour this
>   fix was proposed. It works for mountroot, the most common atmel kernel
>   prompt use cases, but wouldn't work for GELI since it prompts later in
>   the boot process.

Hmmm, good point about geli, there have been complaints that the geli
prompt gets garbled by other output (and I'm anoyed by it too)...

Can we solve this w/ grab?  How would the console code know the other
writers don't have the console grabed?  Maybe by thread?

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."