[PATCH] powerpc/kexec_file: print error string on usable memory property update failure

[Sourabh Jain]

The only place on kexec/kdump path where we don't print
reason for FDT operation failure. This patch fix that.

Will this be a good candidate for next rc?

Thanks,
Sourabh

On 16/12/22 17:57, Sourabh Jain wrote:
> Print the FDT error description along with the error message if failed
> to set the "linux,drconf-usable-memory" property in the kdump kernel's
> FDT.
>
> Signed-off-by: Sourabh Jain <sourabhjain at linux.ibm.com>
> ---
>   arch/powerpc/kexec/file_load_64.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c
> index 349a781cea0b3..7602f7e1e634e 100644
> --- a/arch/powerpc/kexec/file_load_64.c
> +++ b/arch/powerpc/kexec/file_load_64.c
> @@ -687,7 +687,8 @@ static int update_usable_mem_fdt(void *fdt, struct crash_mem *usable_mem)
>   		ret = fdt_setprop(fdt, node, "linux,drconf-usable-memory",
>   				  um_info.buf, (um_info.idx * sizeof(u64)));
>   		if (ret) {
> -			pr_err("Failed to update fdt with linux,drconf-usable-memory property");
> +			pr_err("Failed to update fdt with linux,drconf-usable-memory property: %s",
> +			       fdt_strerror(ret));
>   			goto out;
>   		}
>   	}