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powerpc/powerpnv: Properly handle failure starting CPUs

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If OPAL returns an error, propagate it upward rather than spinning
seconds waiting for a CPU that will never show up

Signed-off-by: Benjamin Herrenschmidt  <benh@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2013-05-03 17:21:00 +00:00
parent 748645bf06
commit 4ea9008b75
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/platforms/powernv/smp.c
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@ -77,9 +77,11 @@ int pnv_smp_kick_cpu(int nr)
if (!paca[nr].cpu_start && firmware_has_feature(FW_FEATURE_OPALv2)) {
pr_devel("OPAL: Starting CPU %d (HW 0x%x)...\n", nr, pcpu);
rc = opal_start_cpu(pcpu, start_here);
if (rc != OPAL_SUCCESS)
if (rc != OPAL_SUCCESS) {
pr_warn("OPAL Error %ld starting CPU %d\n",
rc, nr);
return -ENODEV;
}
}
return smp_generic_kick_cpu(nr);
}