[PATCH] arm64: check return value of of_flat_dt_get_machine_name

[Geert Uytterhoeven]

Hi Kefeng,

On Tue, May 16, 2017 at 10:11 AM, Kefeng Wang
<wangkefeng.wang at huawei.com> wrote:
> On 2017/5/16 15:54, Geert Uytterhoeven wrote:
>> On Tue, May 16, 2017 at 9:36 AM, Kefeng Wang <wangkefeng.wang at huawei.com> wrote:
>>> It's useless to print machine name and setup arch-specific system
>>> identifiers if of_flat_dt_get_machine_name() return NULL, especially
>>> when ACPI-based boot.
>>
>> Is there an ACPI-equivalent of the machine name?
>> If yes, it would be useful to use that instead.
>
> We will get system identification string(machine name) from SMBIOS, see drivers/firmware/dmi_scan.c
> and arch/arm64/kernel/efi.c.
> arm64_dmi_init
> --dmi_scan_machine
>   --dmi_present/dmi_smbios3_present
>     --pr_info("DMI: %s\n", dmi_ids_string);
> --dmi_set_dump_stack_arch_desc

OK, and you have dump_stack_set_arch_desc() there.

Reviewed-by: Geert Uytterhoeven <geert+renesas at glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

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when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds