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powerpc: Fix topology core_id endian issue on LE builds
author
Anton Blanchard
<anton@samba.org>
Thu, 12 Dec 2013 04:59:36 +0000
(15:59 +1100)
committer
Benjamin Herrenschmidt
<benh@kernel.crashing.org>
Fri, 13 Dec 2013 04:48:34 +0000
(15:48 +1100)
cpu_to_core_id() is missing a byteswap:
cat /sys/devices/system/cpu/cpu63/topology/core_id
201326592
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/smp.c
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diff --git
a/arch/powerpc/kernel/smp.c
b/arch/powerpc/kernel/smp.c
index
a3b64f3
..
c1cf4a1
100644
(file)
--- a/
arch/powerpc/kernel/smp.c
+++ b/
arch/powerpc/kernel/smp.c
@@
-580,7
+580,7
@@
int __cpu_up(unsigned int cpu, struct task_struct *tidle)
int cpu_to_core_id(int cpu)
{
struct device_node *np;
- const
int
*reg;
+ const
__be32
*reg;
int id = -1;
np = of_get_cpu_node(cpu, NULL);
@@
-591,7
+591,7
@@
int cpu_to_core_id(int cpu)
if (!reg)
goto out;
- id =
*reg
;
+ id =
be32_to_cpup(reg)
;
out:
of_node_put(np);
return id;