On 11/06/2016 at 00:30:36 +0200, Arnd Bergmann wrote :

On Saturday, June 11, 2016 12:03:04 AM CEST Alexandre Belloni wrote:

quoted

From: Cyrille Pitchen <redacted>

Fix the main and slow clock .prepare() implementations which used to call
usleep() when the scheduler wasn't ready yet.

Does this have to be called that early? It seems wasteful to always
call udelay() here, when these are functions that are normally
allowed to sleep.

Well, the main issue here is that we want to be able to prepare_enable
the slow clock before we are allowed to sleep.

Thinking about it when writing that, I realize that when I reworked my
series, I removed the dependency between the clocksource TCB and the
slow_clock. But I guess we still have one on the main clock. I'll check
whether this is still necessary.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com