mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-23 17:30:02 +00:00
Code Issues Releases Wiki Activity

powerpc/vdso32: Fallback on getres syscall when clock is unknown

Browse source 
There are other clocks than the standard ones, for instance
per process clocks. Therefore, being above the last standard clock
doesn't mean it is a bad clock. So, fallback to syscall instead
of returning -EINVAL inconditionaly.

Fixes: e33ffc956b ("powerpc/vdso32: implement clock_getres entirely")
Cc: stable@vger.kernel.org # v5.6+
Reported-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Link: https://lore.kernel.org/r/7316a9e2c0c2517923eb4b0411c4a08d15e675a4.1589017281.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-05-09 09:42:14 +00:00 committed by Michael Ellerman
parent 4833ce06e6
commit e963b7a28b
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
arch/powerpc/kernel/vdso32/gettimeofday.S
View file

@ -218,11 +218,11 @@ V_FUNCTION_BEGIN(__kernel_clock_getres)
blr
/*
* invalid clock
* syscall fallback
*/
99:
li r3, EINVAL
crset so
li r0,__NR_clock_getres
sc
blr
.cfi_endproc
V_FUNCTION_END(__kernel_clock_getres)