powerpc fixes for 6.3 #5

- A fix for NUMA distance handling in the pseries SCM (pmem) driver.
 
 Thanks to: Aneesh Kumar K.V
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Merge tag 'powerpc-6.3-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - A fix for NUMA distance handling in the pseries SCM (pmem) driver.

   Thanks to Aneesh Kumar K.V.

* tag 'powerpc-6.3-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/papr_scm: Update the NUMA distance table for the target node

arch/powerpc/mm/numa.c

@@ -366,6 +366,7 @@ void update_numa_distance(struct device_node *node)
 	WARN(numa_distance_table[nid][nid] == -1,
 	     "NUMA distance details for node %d not provided\n", nid);
 }
+EXPORT_SYMBOL_GPL(update_numa_distance);
 
 /*
  * ibm,numa-lookup-index-table= {N, domainid1, domainid2, ..... domainidN}

arch/powerpc/platforms/pseries/papr_scm.c

@@ -1428,6 +1428,13 @@ static int papr_scm_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	/*
+	 * open firmware platform device create won't update the NUMA 
+	 * distance table. For PAPR SCM devices we use numa_map_to_online_node()
+	 * to find the nearest online NUMA node and that requires correct
+	 * distance table information.
+	 */
+	update_numa_distance(dn);
 
 	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p)