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| author | Michael Neuling | 2014-08-19 06:48:01 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2014-09-25 15:14:36 +0200 |
| commit | 7dc992ec7b3fd875b05f49f454a922ee94af330b (patch) | |
| tree | c84d92499415a2c7343384dbe1bc80d54c0c951b /arch/powerpc/platforms | |
| parent | powerpc/powernv: Check OPAL RTC calls exists before using (diff) | |
| download | kernel-qcow2-linux-7dc992ec7b3fd875b05f49f454a922ee94af330b.tar.gz kernel-qcow2-linux-7dc992ec7b3fd875b05f49f454a922ee94af330b.tar.xz kernel-qcow2-linux-7dc992ec7b3fd875b05f49f454a922ee94af330b.zip | |
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/powerpc/platforms')
| -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 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__); |