Commit 7dc992ec authored Aug 19, 2014 by Michael Neuling Committed by Michael Ellerman Sep 25, 2014

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 <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 035ed26f

arch/powerpc/platforms/powernv/opal-elog.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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__);