Re: [PATCH v9 9/9] liveupdate: kho: Use %pe format specifier for error pointer printing

[Mike Rapoport]

On Sat, Nov 01, 2025 at 10:23:25AM -0400, Pasha Tatashin wrote:
> From: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
> 
> Make pr_xxx() call to use the %pe format specifier instead of %d.
> The %pe specifier prints a symbolic error string (e.g., -ENOMEM,
> -EINVAL) when given an error pointer created with ERR_PTR(err).
> 
> This change enhances the clarity and diagnostic value of the error
> message by showing a descriptive error name rather than a numeric
> error code.
> 
> Note, that some err are still printed by value, as those errors
> might come from libfdt and not regular errnos.
> 
> Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
> Co-developed-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
> Signed-off-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
> Reviewed-by: Simon Horman <horms@xxxxxxxxxx>

Reviewed-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>

> ---
>  kernel/liveupdate/kexec_handover.c         |  4 ++--
>  kernel/liveupdate/kexec_handover_debugfs.c | 10 ++++++----
>  2 files changed, 8 insertions(+), 6 deletions(-)

-- 
Sincerely yours,
Mike.