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authorSrikant Patnaik2015-01-13 15:08:24 +0530
committerSrikant Patnaik2015-01-13 15:08:24 +0530
commit97327692361306d1e6259021bc425e32832fdb50 (patch)
treefe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/powerpc/kernel/swsusp.c
parent2d05a8f663478a44e088d122e0d62109bbc801d0 (diff)
parenta3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff)
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dirty fix to merging
Diffstat (limited to 'arch/powerpc/kernel/swsusp.c')
-rw-r--r--arch/powerpc/kernel/swsusp.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c
new file mode 100644
index 00000000..eae33e10
--- /dev/null
+++ b/arch/powerpc/kernel/swsusp.c
@@ -0,0 +1,38 @@
+/*
+ * Common powerpc suspend code for 32 and 64 bits
+ *
+ * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/sched.h>
+#include <asm/current.h>
+#include <asm/mmu_context.h>
+#include <asm/switch_to.h>
+
+void save_processor_state(void)
+{
+ /*
+ * flush out all the special registers so we don't need
+ * to save them in the snapshot
+ */
+ flush_fp_to_thread(current);
+ flush_altivec_to_thread(current);
+ flush_spe_to_thread(current);
+
+#ifdef CONFIG_PPC64
+ hard_irq_disable();
+#endif
+
+}
+
+void restore_processor_state(void)
+{
+#ifdef CONFIG_PPC32
+ switch_mmu_context(current->active_mm, current->active_mm);
+#endif
+}