In 64-bit mode, kernel just clears the irq soft-enable flag
in struct paca_struct to disable external irqs. But, in
the case of suspend, irqs should be disabled by hardware.
Therefore, hook a function to ppc_md.suspend_disable_irqs
to really disable irqs.
Signed-off-by: Chenhui Zhao <chenhui.z...@freescale.com>
---
arch/powerpc/platforms/85xx/corenet_generic.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c
b/arch/powerpc/platforms/85xx/corenet_generic.c
index 3fdf9f3..983d81f 100644
--- a/arch/powerpc/platforms/85xx/corenet_generic.c
+++ b/arch/powerpc/platforms/85xx/corenet_generic.c
@@ -32,6 +32,13 @@
#include <sysdev/fsl_pci.h>
#include "smp.h"
+#if defined(CONFIG_PPC64) && defined(CONFIG_SUSPEND)
+static void fsl_suspend_disable_irqs(void)
+{
+ __hard_irq_disable();
+}
+#endif
+
void __init corenet_gen_pic_init(void)
{
struct mpic *mpic;
@@ -58,6 +65,11 @@ void __init corenet_gen_setup_arch(void)
fsl_rcpm_init();
+#if defined(CONFIG_PPC64) && defined(CONFIG_SUSPEND)
+ /* physically disable irq for 64-bit mode when suspend */
+ ppc_md.suspend_disable_irqs = fsl_suspend_disable_irqs;
+#endif
+
pr_info("%s board from Freescale Semiconductor\n", ppc_md.name);
}
--
1.7.3
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