Re: [PATCH v3 1/4] arm: mach-omap: Change mountpoint of boot partitions

[Sascha Hauer <s.hauer@pengutronix.de>]

On Fri, May 12, 2017 at 01:07:16PM +0200, Daniel Schultz wrote:
> If using EMMC and SD as bootsources, mounting the boot partition of both
> devices to /boot makes trouble. Either the correct device is mounted to
> /boot or a remount of /boot has to be performed.
> 
> To ensure this problem each MMCn bootsource will be mounted to his own
> path in /mnt/mmcN.0
> 
> Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
> ---
> Changes:
> 	v3: Added symlink from rootpath to BOOT_PATH

Applied (this patch), thanks

Sascha

> 
>  arch/arm/mach-omap/omap_generic.c | 36 +++++++++++++++++++++++++-----------
>  1 file changed, 25 insertions(+), 11 deletions(-)
> 
> diff --git a/arch/arm/mach-omap/omap_generic.c b/arch/arm/mach-omap/omap_generic.c
> index 1d03eac..694c951 100644
> --- a/arch/arm/mach-omap/omap_generic.c
> +++ b/arch/arm/mach-omap/omap_generic.c
> @@ -113,12 +113,15 @@ const char *omap_get_bootmmc_devname(void)
>  }
>  
>  #if defined(CONFIG_ENV_HANDLING)
> -#define ENV_PATH "/boot/barebox.env"
> +static char *envpath = "/mnt/mmc0.0/barebox.env";
> +
>  static int omap_env_init(void)
>  {
> -	char *partname;
> -	const char *diskdev;
>  	int ret;
> +	const char *diskdev;
> +	char *partname;
> +	struct cdev *cdev;
> +	const char *rootpath;
>  
>  	if (bootsource_get() != BOOTSOURCE_MMC)
>  		return 0;
> @@ -129,18 +132,29 @@ static int omap_env_init(void)
>  		diskdev = "disk0";
>  
>  	device_detect_by_name(diskdev);
> +	partname = basprintf("%s.0", diskdev);
> +	cdev = cdev_by_name(partname);
> +	if (cdev == NULL) {
> +		pr_err("Failed to get device %s\n", partname);
> +		goto out;
> +	}
>  
> -	partname = basprintf("/dev/%s.0", diskdev);
> -
> -	mkdir("/boot", 0666);
> -	ret = mount(partname, "fat", "/boot", NULL);
> -	if (ret) {
> -		pr_err("Failed to load environment: mount %s failed (%d)\n", partname, ret);
> +	rootpath = cdev_mount_default(cdev, NULL);
> +	if (IS_ERR(rootpath)) {
> +		pr_err("Failed to load environment: mount %s failed (%d)\n",
> +						cdev->name, IS_ERR(rootpath));
>  		goto out;
>  	}
> +	ret = symlink(rootpath, "/boot");
> +	if (ret < 0)
> +		pr_warn("Failed to create symlink from %s to %s\n", rootpath
> +								, "/boot");
> +
> +	envpath = basprintf("%s/barebox.env", rootpath);
>  
> -	pr_debug("Loading default env from %s on device %s\n", ENV_PATH, partname);
> -	default_environment_path_set(ENV_PATH);
> +	pr_debug("Loading default env from %s on device %s\n", envpath,
> +								partname);
> +	default_environment_path_set(envpath);
>  
>  out:
>  	free(partname);
> -- 
> 1.9.1
> 
> 
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