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(parent: 207022d) | patch
s390/ctlreg: return old register contents when changing bits
authorHeiko Carstens <hca@linux.ibm.com>
Fri, 1 Dec 2023 13:09:29 +0000 (14:09 +0100)
committerAlexander Gordeev <agordeev@linux.ibm.com>
Mon, 11 Dec 2023 13:33:04 +0000 (14:33 +0100)
commitf88d36845391f8df8faa9d28818bfbdd67af0d91
treed0104a336cffb02730484eaa2f61fd71cc5f906dtree | snapshot
parent207022d39d3b158ca3581e321212f799fa5e7e24commit | diff
s390/ctlreg: return old register contents when changing bits

Change local_ctl_set_bit() and local_ctl_clear_bit() so they return the
previous value of the to be changed control register. This is useful if a
bit is only changed temporarily and the previous content needs to be
restored.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
arch/s390/include/asm/ctlreg.h diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git