tree 698dc80f777dcb42b38bff004f3fefa811786d50
parent 4ad9ea69aba4a556d105e55cc5b67c5b3fc78fca
author Tom Tsou <tom@tsou.cc> 1418703813 -0800
committer Tom Tsou <tom@tsou.cc> 1418703927 -0800

b210: Lock dual-channel tuning access

Frequency tuning is a multi-step process with RF and DDC/DUC protoimns
that can be corrupted if both channels attempt to tune at the same time.

Signed-off-by: Tom Tsou <tom@tsou.cc>