linux-kernel - Re: Crashing 'kzm' target in next-20160913 due to 'gpio: mxc: shift gpio_mxc_init() to subsys

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Date:   Sun, 18 Sep 2016 08:08:45 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Vladimir Zapolskiy <vladimir_zapolskiy@...tor.com>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: Crashing 'kzm' target in next-20160913 due to 'gpio: mxc: shift
 gpio_mxc_init() to subsys_initcall level'

Hi Guenter,

On Thu, Sep 15, 2016 at 04:35:04PM +0300, Vladimir Zapolskiy wrote:
> The proper fix in this particular case should be like this one:
> 

Does Vladimir's patch below fix your problem?

Shawn

> diff --git a/arch/arm/mach-imx/mach-kzm_arm11_01.c b/arch/arm/mach-imx/mach-kzm_arm11_01.c
> index 31df4361996f..8288acfe7221 100644
> --- a/arch/arm/mach-imx/mach-kzm_arm11_01.c
> +++ b/arch/arm/mach-imx/mach-kzm_arm11_01.c
> @@ -245,13 +245,17 @@ static void __init kzm_board_init(void)
>  	mxc_iomux_setup_multiple_pins(kzm_pins,
>  				      ARRAY_SIZE(kzm_pins), "kzm");
> -	kzm_init_ext_uart();
> -	kzm_init_smsc9118();
>  	kzm_init_imx_uart();
>  	pr_info("Clock input source is 26MHz\n");
>  }
> +static void __init kzm_late_init(void)
> +{
> +	kzm_init_ext_uart();
> +	kzm_init_smsc9118();
> +}
> +
>  /*
>   * This structure defines static mappings for the kzm-arm11-01 board.
>   */
> @@ -291,5 +295,6 @@ MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
>  	.init_irq = mx31_init_irq,
>  	.init_time	= kzm_timer_init,
>  	.init_machine = kzm_board_init,
> +	.init_late	= kzm_late_init,
>  	.restart	= mxc_restart,
>  MACHINE_END
> --