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Diffstat (limited to 'arch/powerpc/platforms/powernv/smp.c')
-rw-r--r--arch/powerpc/platforms/powernv/smp.c74
1 files changed, 31 insertions, 43 deletions
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
index ca264833ee64..ad7b1a3dbed0 100644
--- a/arch/powerpc/platforms/powernv/smp.c
+++ b/arch/powerpc/platforms/powernv/smp.c
@@ -61,14 +61,15 @@ static int pnv_smp_kick_cpu(int nr)
unsigned long start_here =
__pa(ppc_function_entry(generic_secondary_smp_init));
long rc;
+ uint8_t status;
BUG_ON(nr < 0 || nr >= NR_CPUS);
/*
- * If we already started or OPALv2 is not supported, we just
+ * If we already started or OPAL is not supported, we just
* kick the CPU via the PACA
*/
- if (paca[nr].cpu_start || !firmware_has_feature(FW_FEATURE_OPALv2))
+ if (paca[nr].cpu_start || !firmware_has_feature(FW_FEATURE_OPAL))
goto kick;
/*
@@ -77,55 +78,42 @@ static int pnv_smp_kick_cpu(int nr)
* first time. OPAL v3 allows us to query OPAL to know if it
* has the CPUs, so we do that
*/
- if (firmware_has_feature(FW_FEATURE_OPALv3)) {
- uint8_t status;
-
- rc = opal_query_cpu_status(pcpu, &status);
- if (rc != OPAL_SUCCESS) {
- pr_warn("OPAL Error %ld querying CPU %d state\n",
- rc, nr);
- return -ENODEV;
- }
+ rc = opal_query_cpu_status(pcpu, &status);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("OPAL Error %ld querying CPU %d state\n", rc, nr);
+ return -ENODEV;
+ }
- /*
- * Already started, just kick it, probably coming from
- * kexec and spinning
- */
- if (status == OPAL_THREAD_STARTED)
- goto kick;
+ /*
+ * Already started, just kick it, probably coming from
+ * kexec and spinning
+ */
+ if (status == OPAL_THREAD_STARTED)
+ goto kick;
- /*
- * Available/inactive, let's kick it
- */
- if (status == OPAL_THREAD_INACTIVE) {
- pr_devel("OPAL: Starting CPU %d (HW 0x%x)...\n",
- nr, pcpu);
- rc = opal_start_cpu(pcpu, start_here);
- if (rc != OPAL_SUCCESS) {
- pr_warn("OPAL Error %ld starting CPU %d\n",
- rc, nr);
- return -ENODEV;
- }
- } else {
- /*
- * An unavailable CPU (or any other unknown status)
- * shouldn't be started. It should also
- * not be in the possible map but currently it can
- * happen
- */
- pr_devel("OPAL: CPU %d (HW 0x%x) is unavailable"
- " (status %d)...\n", nr, pcpu, status);
+ /*
+ * Available/inactive, let's kick it
+ */
+ if (status == OPAL_THREAD_INACTIVE) {
+ pr_devel("OPAL: Starting CPU %d (HW 0x%x)...\n", nr, pcpu);
+ rc = opal_start_cpu(pcpu, start_here);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("OPAL Error %ld starting CPU %d\n", rc, nr);
return -ENODEV;
}
} else {
/*
- * On OPAL v2, we just kick it and hope for the best,
- * we must not test the error from opal_start_cpu() or
- * we would fail to get CPUs from kexec.
+ * An unavailable CPU (or any other unknown status)
+ * shouldn't be started. It should also
+ * not be in the possible map but currently it can
+ * happen
*/
- opal_start_cpu(pcpu, start_here);
+ pr_devel("OPAL: CPU %d (HW 0x%x) is unavailable"
+ " (status %d)...\n", nr, pcpu, status);
+ return -ENODEV;
}
- kick:
+
+kick:
return smp_generic_kick_cpu(nr);
}