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powerpc/powernv: Check OPAL dump calls exist before using

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Check that the OPAL_DUMP_READ token exists before initalising the elog
infrastructure.

This avoids littering the OPAL console with:
  "OPAL: Called with bad token 91"

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Neuling 2014-08-19 14:48:02 +10:00 committed by Michael Ellerman
parent 7dc992ec7b
commit 831cf65b02
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/platforms/powernv/opal-dump.c
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@ -427,6 +427,10 @@ void __init opal_platform_dump_init(void)
{
int rc;
/* ELOG not supported by firmware */
if (!opal_check_token(OPAL_DUMP_READ))
return;
dump_kset = kset_create_and_add("dump", NULL, opal_kobj);
if (!dump_kset) {
pr_warn("%s: Failed to create dump kset\n", __func__);