linux-kernel - Re: mfd: rc5t583: set regmap config reg counts properly

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Message-ID: <20160211170704.GG20693@x1>
Date:	Thu, 11 Feb 2016 17:07:04 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	"Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>, ldewangan@...dia.com
Subject: Re: mfd: rc5t583: set regmap config reg counts properly

On Sun, 31 Jan 2016, Maciej S. Szmigiero wrote:

> Regmap config max_register field should contain number of
> device last register, however num_reg_defaults_raw field
> should be set to register count instead
> (usually one register more than max_register).
> 
> rc5t583 driver had both of these fields set to the same value,
> fix this by introducing separate defines for max register
> number and total count of registers.
> 
> Signed-off-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
> ---
>  drivers/mfd/rc5t583.c       | 4 ++--
>  include/linux/mfd/rc5t583.h | 5 +++--
>  2 files changed, 5 insertions(+), 4 deletions(-)

These 3 patches should really be submitted as a threaded set, so they
stay together in one's inbox.

Also, please submit patches using the subject line format expected by
the subsystem.

`git log --oneline -- <subsystem>` helps with this.

As you're a first time offender, I'll fix this for you this time.

Applied, thanks.

> diff --git a/drivers/mfd/rc5t583.c b/drivers/mfd/rc5t583.c
> index e10f02f5d551..fc2b2d93f354 100644
> --- a/drivers/mfd/rc5t583.c
> +++ b/drivers/mfd/rc5t583.c
> @@ -241,8 +241,8 @@ static const struct regmap_config rc5t583_regmap_config = {
>  	.reg_bits = 8,
>  	.val_bits = 8,
>  	.volatile_reg = volatile_reg,
> -	.max_register = RC5T583_MAX_REGS,
> -	.num_reg_defaults_raw = RC5T583_MAX_REGS,
> +	.max_register = RC5T583_MAX_REG,
> +	.num_reg_defaults_raw = RC5T583_NUM_REGS,
>  	.cache_type = REGCACHE_RBTREE,
>  };
>  
> diff --git a/include/linux/mfd/rc5t583.h b/include/linux/mfd/rc5t583.h
> index fd413ccab915..8d0a392e0a7f 100644
> --- a/include/linux/mfd/rc5t583.h
> +++ b/include/linux/mfd/rc5t583.h
> @@ -28,8 +28,6 @@
>  #include <linux/types.h>
>  #include <linux/regmap.h>
>  
> -#define RC5T583_MAX_REGS		0xF8
> -
>  /* Maximum number of main interrupts */
>  #define MAX_MAIN_INTERRUPT		5
>  #define RC5T583_MAX_GPEDGE_REG		2
> @@ -169,6 +167,9 @@
>  #define RC5T583_RTC_AY_MONTH 0xF3
>  #define RC5T583_RTC_AY_YEAR	0xF4
>  
> +#define RC5T583_MAX_REG		0xF7
> +#define RC5T583_NUM_REGS	(RC5T583_MAX_REG + 1)
> +
>  /* RICOH_RC5T583 IRQ definitions */
>  enum {
>  	RC5T583_IRQ_ONKEY,

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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