linux-kernel - Re: [PATCH] regulator: core: Fix build error due to const qualifier for ops

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Date:	Mon, 18 Aug 2014 21:06:17 +0800
From:	Guodong Xu <guodong.xu@...aro.org>
To:	Axel Lin <axel.lin@...ics.com>, Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] regulator: core: Fix build error due to const qualifier
 for ops

I'm sending a patch to fix the build error on mc13892-regulator.c

-Guodong

On 08/18/2014 10:34 AM, Axel Lin wrote:
> Drop const qualifier for ops of struct regulator_desc.
> Allow regulator drivers to update ops before registering regulator.
> 
> Fix below build error:
>   CC [M]  drivers/regulator/mc13892-regulator.o
> drivers/regulator/mc13892-regulator.c: In function 'mc13892_regulator_probe':
> drivers/regulator/mc13892-regulator.c:586:3: error: assignment of member 'set_mode' in read-only object
> drivers/regulator/mc13892-regulator.c:588:3: error: assignment of member 'get_mode' in read-only object
> make[2]: *** [drivers/regulator/mc13892-regulator.o] Error 1
> make[1]: *** [drivers/regulator] Error 2
> make: *** [drivers] Error 2
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Axel Lin <axel.lin@...ics.com>
> ---
>  include/linux/regulator/driver.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
> index efe058f..3abda75 100644
> --- a/include/linux/regulator/driver.h
> +++ b/include/linux/regulator/driver.h
> @@ -246,7 +246,7 @@ struct regulator_desc {
>  	int id;
>  	bool continuous_voltage_range;
>  	unsigned n_voltages;
> -	const struct regulator_ops *ops;
> +	struct regulator_ops *ops;
>  	int irq;
>  	enum regulator_type type;
>  	struct module *owner;
> 
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