[RFC,PATCH 1/2] Add a common struct clk

[Jeremy Kerr]

Hi Lothar,

> You may want to disable a clock in the IRQ handler. The VPU driver in
> the Freescale BSP for i.MX51 does exactly this.

Is this something we can defer to a sleepable context?

> Anyway I don't see any reason for using a mutex here instead of
> spin_lock_irq_save() as all other implementations do.

Just that enable/disable may take an arbitrarily long time to complete. Sounds 
like that hasn't been a problem in the past though.

Cheers,


Jeremy