linux-kernel - RE: [PATCH 06/11] i2c: imx-lpi2c: improve i2c driver probe priority

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Date:   Fri, 19 Mar 2021 05:05:34 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Clark Wang <xiaoning.wang@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
CC:     "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "sumit.semwal@...aro.org" <sumit.semwal@...aro.org>,
        "christian.koenig@....com" <christian.koenig@....com>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 06/11] i2c: imx-lpi2c: improve i2c driver probe priority

> From: Clark Wang <xiaoning.wang@....com>
> Sent: Wednesday, March 17, 2021 2:54 PM
> 
> use subsys_initcall for i2c driver to improve i2c driver probe priority

Will this affect DMA support which will be probed much later compared with subsys_initcall?

> 
> Signed-off-by: Gao Pan <pandy.gao@....com>

Add your sign-off

> ---
>  drivers/i2c/busses/i2c-imx-lpi2c.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c
> b/drivers/i2c/busses/i2c-imx-lpi2c.c
> index 8f9dd3dd2951..86b69852f7be 100644
> --- a/drivers/i2c/busses/i2c-imx-lpi2c.c
> +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
> @@ -710,7 +710,17 @@ static struct platform_driver lpi2c_imx_driver = {
>  	},
>  };
> 
> -module_platform_driver(lpi2c_imx_driver);
> +static int __init lpi2c_imx_init(void)
> +{
> +	return platform_driver_register(&lpi2c_imx_driver);
> +}
> +subsys_initcall(lpi2c_imx_init);
> +
> +static void __exit lpi2c_imx_exit(void) {
> +	platform_driver_unregister(&lpi2c_imx_driver);
> +}
> +module_exit(lpi2c_imx_exit);
> 
>  MODULE_AUTHOR("Gao Pan <pandy.gao@....com>");
> MODULE_DESCRIPTION("I2C adapter driver for LPI2C bus");
> --
> 2.25.1