liveupdate: kho: use %pe format specifier for error pointer printing

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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.

Link: https://lkml.kernel.org/r/20251101142325.1326536-10-pasha.tatashin@soleen.com
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Co-developed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Changyuan Lyu <changyuanl@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Zhu Yanjun 2025-11-01 10:23:25 -04:00 • committed by Andrew Morton

parent c332ebd9c0

commit 8db839caee

2 changed files with 8 additions and 6 deletions

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4

kernel/liveupdate/kexec_handover.c

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10

kernel/liveupdate/kexec_handover_debugfs.c

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