Commit 45939ce2 authored Jan 28, 2020 by Florian Fainelli Committed by Russell King Feb 21, 2020

ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional()



It is possible for a system with an ARMv8 timer to run a 32-bit kernel.
When this happens we will unconditionally have the vDSO code remove the
__vdso_gettimeofday and __vdso_clock_gettime symbols because
cntvct_functional() returns false since it does not match that
compatibility string.

Fixes: ecf99a43 ("ARM: 8331/1: VDSO initialization, mapping, and synchronization")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

parent bb6d3fb3

arch/arm/kernel/vdso.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -94,6 +94,8 @@ static bool __init cntvct_functional(void)
		* this.
		*/
		np = of_find_compatible_node(NULL, NULL, "arm,armv7-timer");
		if (!np)
		np = of_find_compatible_node(NULL, NULL, "arm,armv8-timer");
		if (!np)
		goto out_put;

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