arm64/traps: Avoid unnecessary kernel/user pointer conversion

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Annotating a pointer from kernel to __user and then back again requires
an extra __force annotation to silent sparse warning. In call_undef_hook()
this unnecessary complexity can be avoided by modifying the intermediate
user pointer to unsigned long.

This way there is no inter-changeable use of user and kernel pointers
and the code is consistent.

Note: This patch adds no functional changes to code.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210917055811.22341-1-amit.kachhap@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

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Amit Daniel Kachhap 2021-09-17 11:28:11 +05:30 • committed by Will Deacon

parent 5816b3e657

commit f5b650f887

1 changed files with 2 additions and 2 deletions

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arch/arm64/kernel/traps.c

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