linux-kernel - Re: [PATCH v2 1/2] clk: Disable unused clocks after deferred probing is done

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Date:	Fri, 10 May 2013 08:45:20 +0200
From:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
To:	Saravana Kannan <skannan@...eaurora.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Mike Turquette <mturquette@...aro.org>,
	Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-arm-msm@...r.kernel.org, Stephen Boyd <sboyd@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 1/2] clk: Disable unused clocks after deferred
 probing is done

On 11:35 Thu 09 May     , Saravana Kannan wrote:
> With deferred probing, late_initcall() is too soon to declare a clock as
> unused. Wait for deferred probing to finish before declaring a clock as
> unused. Since deferred probing is done in late_initcall(), do the unused
> check to late_initcall_sync.

Nack for both regulator & clk

you can not known when the clock need to be shutdown

example display splash screen set by the bootloader and display as module

Best Regards,
J.
> 
> Signed-off-by: Saravana Kannan <skannan@...eaurora.org>
> ---
>  drivers/clk/clk.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index fe4055f..5ecb64c 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -534,7 +534,7 @@ static int clk_disable_unused(void)
>  
>  	return 0;
>  }
> -late_initcall(clk_disable_unused);
> +late_initcall_sync(clk_disable_unused);
>  
>  /***    helper functions   ***/
>  
> -- 
> 1.7.8.3
> 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> hosted by The Linux Foundation
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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