Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c
new file mode 100644
index 0000000000..41dcb21752
--- /dev/null
+++ b/arch/powerpc/kernel/swsusp.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Common powerpc suspend code for 32 and 64 bits
+ *
+ * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
+ */
+
+#include <linux/sched.h>
+#include <linux/suspend.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_all_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, NULL);
+#endif
+}