3.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
commit b0dd00addc5035f87ec9c5820dacc1ebc7fcb3e6 upstream.
The conversion from __get_cpu_var() to this_cpu_ptr() in iic_setup_cpu()
is wrong. It causes an oops at boot.
We need the per-cpu address of struct cpu_iic, not cpu_iic.regs->prio.
Sparse noticed this, because we pass a non-iomem pointer to out_be64(),
but we obviously don't check the sparse results often enough.
Fixes: 69111bac42f5 ("powerpc: Replace __get_cpu_var uses")
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/cell/interrupt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -163,7 +163,7 @@ static unsigned int iic_get_irq(void)
void iic_setup_cpu(void)
{
- out_be64(this_cpu_ptr(&cpu_iic.regs->prio), 0xff);
+ out_be64(&this_cpu_ptr(&cpu_iic)->regs->prio, 0xff);
}
u8 iic_get_target_id(int cpu)
--
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