[U-Boot] [PATCH 1/1] vsprintf.c: add EFI device path printing

[Wolfgang Denk]

Dear Heinrich,

In message <20171118110946.26014-1-xypron.glpk at gmx.de> you wrote:
> For debugging efi_loader we need the capability to print EFI
> device paths. With this patch we can write:
> 
>     debug("device path: %pD", dp);
...

> +#ifdef CONFIG_EFI_LOADER
> +static char *device_path_string(char *buf, char *end, void *dp, int field_width,
> +				int precision, int flags)
> +{
> +	u16 *str = efi_dp_str((struct efi_device_path *)dp);
> +
> +	buf = string16(buf, end, str, field_width, precision, flags);
> +	efi_free_pool(str);

efi_dp_str() can return NULL.  Should thhis not be handled?

Best regards,

Wolfgang Denk

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