ARM: clean up the memset64() C wrapper

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commit b52343d1cb upstream.

The current logic to split the 64-bit argument into its 32-bit halves is
byte-order specific and a bit clunky.  Use a union instead which is
easier to read and works in all cases.

GCC still generates the same machine code.

While at it, rename the arguments of the __memset64() prototype to
actually reflect their semantics.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Ben Hutchings <ben@decadent.org.uk> # for -stable
Link: https://lore.kernel.org/all/1a11526ae3d8664f705b541b8d6ea57b847b49a8.camel@decadent.org.uk/
Suggested-by: https://lore.kernel.org/all/aZonkWMwpbFhzDJq@casper.infradead.org/ # for -stable
Link: https://lore.kernel.org/all/aZonkWMwpbFhzDJq@casper.infradead.org/
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Thomas Weißschuh 2026-02-13 08:39:29 +01:00 • committed by Sasha Levin

parent 54e841a036

commit 3d46af0f8b

1 changed files with 9 additions and 5 deletions

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arch/arm/include/asm/string.h

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