Minor fixes to PL011 UART

[Warner Losh]

> On Dec 10, 2014, at 2:14 PM, Zbigniew Bodek <zbb at semihalf.com> wrote:
> 
> <0001-Fix-some-obvious-mistakes-in-ARM-PL011-UART.patch>

This looks good to me, assuming that the busy bit you are testing is well defined for all implementations of pl011. I’d consider adding the uart_barrier, but it isn’t critical.

Warner
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 842 bytes
Desc: Message signed with OpenPGP using GPGMail
URL: <http://lists.freebsd.org/pipermail/freebsd-arm/attachments/20141210/7a750604/attachment.sig>