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

From: Jeremy Kerr
Date: Fri Jun 11 2010 - 06:51:04 EST

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.


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