From 7dc992ec7b3fd875b05f49f454a922ee94af330b Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Tue, 19 Aug 2014 14:48:01 +1000 Subject: [PATCH] powerpc/powernv: Check OPAL elog calls exist before using Check that the OPAL_ELOG_READ token exists before initalising the elog infrastructure. This avoids littering the OPAL console with: "OPAL: Called with bad token 74" Signed-off-by: Michael Neuling Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/opal-elog.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index bbdb3ffaab98..518fe95dbf24 100644 --- a/arch/powerpc/platforms/powernv/opal-elog.c +++ b/arch/powerpc/platforms/powernv/opal-elog.c @@ -295,6 +295,10 @@ int __init opal_elog_init(void) { int rc = 0; + /* ELOG not supported by firmware */ + if (!opal_check_token(OPAL_ELOG_READ)) + return -1; + elog_kset = kset_create_and_add("elog", NULL, opal_kobj); if (!elog_kset) { pr_warn("%s: failed to create elog kset\n", __func__); -- 2.20.1