diff options
author | Michael Neuling <mikey@neuling.org> | 2014-08-19 04:48:01 (GMT) |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2014-09-25 13:14:36 (GMT) |
commit | 7dc992ec7b3fd875b05f49f454a922ee94af330b (patch) | |
tree | c84d92499415a2c7343384dbe1bc80d54c0c951b /arch | |
parent | 035ed26fb090ff3277900259f19d57e54da2e116 (diff) | |
download | linux-7dc992ec7b3fd875b05f49f454a922ee94af330b.tar.xz |
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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/platforms/powernv/opal-elog.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index bbdb3ff..518fe95 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__); |