[PATCH 5.7 016/120] ARM: 8987/1: VDSO: Fix incorrect clock_gettime64

[Greg Kroah-Hartman]

From: Jaedon Shin <jaedon.shin@xxxxxxxxx>

commit 4405bdf3c57ec28d606bdf5325f1167505bfdcd4 upstream.

__vdso_*() should be removed and fallback used if CNTCVT is not
available by cntvct_functional(). __vdso_clock_gettime64 when added
previous commit is using the incorrect CNTCVT value in that state.
__vdso_clock_gettime64 is also added to remove it's symbol.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 74d06efb9c2f ("ARM: 8932/1: Add clock_gettime64 entry point")
Signed-off-by: Jaedon Shin <jaedon.shin@xxxxxxxxx>
Tested-by: Robin Murphy <robin.mruphy@xxxxxxx>
Signed-off-by: Robin Murphy <robin.murphy@xxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/arm/kernel/vdso.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/kernel/vdso.c
+++ b/arch/arm/kernel/vdso.c
@@ -184,6 +184,7 @@ static void __init patch_vdso(void *ehdr
 	if (!cntvct_ok) {
 		vdso_nullpatch_one(&einfo, "__vdso_gettimeofday");
 		vdso_nullpatch_one(&einfo, "__vdso_clock_gettime");
+		vdso_nullpatch_one(&einfo, "__vdso_clock_gettime64");
 	}
 }