linux-kernel - Re: [PATCH 1/2] edac: mpc52xx: Use platform_register/unregister

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Date:	Wed, 02 Dec 2015 19:09:13 +0000
From:	Johannes Thumshirn <jthumshirn@...e.de>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	Johannes Thumshirn <morbidrsa@...il.com>,
	Doug Thompson <dougthompson@...ssion.com>,
	Borislav Petkov <bp@...en8.de>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] edac: mpc52xx: Use
 platform_register/unregister_drivers()

The subject is reading mpc52xx instead of mpc85xx but other than that

Reviewed-by: Johannes Thumshirn <jthumshirn@...e>

Zitat von Thierry Reding <thierry.reding@...il.com>:

> From: Thierry Reding <treding@...dia.com>
>
> These new helpers simplify implementing multi-driver modules and
> properly handle failure to register one driver by unregistering all
> previously registered drivers.
>
> Signed-off-by: Thierry Reding <treding@...dia.com>
> ---
>  drivers/edac/mpc85xx_edac.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/edac/mpc85xx_edac.c b/drivers/edac/mpc85xx_edac.c
> index 23ef8e9f2c9a..3eab06351089 100644
> --- a/drivers/edac/mpc85xx_edac.c
> +++ b/drivers/edac/mpc85xx_edac.c
> @@ -1208,6 +1208,11 @@ static void __init mpc85xx_mc_clear_rfxe(void *data)
>  }
>  #endif
>
> +static struct platform_driver * const drivers[] = {
> +	&mpc85xx_mc_err_driver,
> +	&mpc85xx_l2_err_driver,
> +};
> +
>  static int __init mpc85xx_mc_init(void)
>  {
>  	int res = 0;
> @@ -1226,13 +1231,9 @@ static int __init mpc85xx_mc_init(void)
>  		break;
>  	}
>
> -	res = platform_driver_register(&mpc85xx_mc_err_driver);
> -	if (res)
> -		printk(KERN_WARNING EDAC_MOD_STR "MC fails to register\n");
> -
> -	res = platform_driver_register(&mpc85xx_l2_err_driver);
> +	res = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
>  	if (res)
> -		printk(KERN_WARNING EDAC_MOD_STR "L2 fails to register\n");
> +		printk(KERN_WARNING EDAC_MOD_STR "drivers fail to register\n");
>
>  #ifdef CONFIG_FSL_SOC_BOOKE
>  	pvr = mfspr(SPRN_PVR);
> @@ -1270,8 +1271,7 @@ static void __exit mpc85xx_mc_exit(void)
>  		on_each_cpu(mpc85xx_mc_restore_hid1, NULL, 0);
>  	}
>  #endif
> -	platform_driver_unregister(&mpc85xx_l2_err_driver);
> -	platform_driver_unregister(&mpc85xx_mc_err_driver);
> +	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
>  }
>
>  module_exit(mpc85xx_mc_exit);
> --
> 2.5.0
>
> --
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