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powerpc/hotplug-mem: Fix missing endian conversion of aa_index 

When adding or removing memory, the aa_index (affinity value) for the
memblock must also be converted to match the endianness of the rest
of the 'ibm,dynamic-memory' property.  Otherwise, subsequent retrieval
of the attribute will likely lead to non-existent nodes, followed by
using the default node in the code inappropriately.

Fixes: 5f97b2a0d1 ("powerpc/pseries: Implement memory hotplug add in the kernel")
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Michael Bringmann 2017-05-22 15:44:37 -05:00 committed by Michael Ellerman
parent 6f553912ee
commit dc421b200f
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/platforms/pseries/hotplug-memory.c
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@ -124,6 +124,7 @@ static struct property *dlpar_clone_drconf_property(struct device_node *dn)
for (i = 0; i < num_lmbs; i++) {
lmbs[i].base_addr = be64_to_cpu(lmbs[i].base_addr);
lmbs[i].drc_index = be32_to_cpu(lmbs[i].drc_index);
lmbs[i].aa_index = be32_to_cpu(lmbs[i].aa_index);
lmbs[i].flags = be32_to_cpu(lmbs[i].flags);
}
@ -147,6 +148,7 @@ static void dlpar_update_drconf_property(struct device_node *dn,
for (i = 0; i < num_lmbs; i++) {
lmbs[i].base_addr = cpu_to_be64(lmbs[i].base_addr);
lmbs[i].drc_index = cpu_to_be32(lmbs[i].drc_index);
lmbs[i].aa_index = cpu_to_be32(lmbs[i].aa_index);
lmbs[i].flags = cpu_to_be32(lmbs[i].flags);
}