Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 39 insertions, 0 deletions

diff --git a/arch/sh/include/asm/sram.h b/arch/sh/include/asm/sram.h
new file mode 100644
index 000000000..c125cf219
--- /dev/null
+++ b/arch/sh/include/asm/sram.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SRAM_H
+#define __ASM_SRAM_H
+
+#ifdef CONFIG_HAVE_SRAM_POOL
+
+#include <linux/spinlock.h>
+#include <linux/genalloc.h>
+
+/* arch/sh/mm/sram.c */
+extern struct gen_pool *sram_pool;
+
+static inline unsigned long sram_alloc(size_t len)
+{
+	if (!sram_pool)
+		return 0UL;
+
+	return gen_pool_alloc(sram_pool, len);
+}
+
+static inline void sram_free(unsigned long addr, size_t len)
+{
+	return gen_pool_free(sram_pool, addr, len);
+}
+
+#else
+
+static inline unsigned long sram_alloc(size_t len)
+{
+	return 0;
+}
+
+static inline void sram_free(unsigned long addr, size_t len)
+{
+}
+
+#endif /* CONFIG_HAVE_SRAM_POOL */
+
+#endif /* __ASM_SRAM_H */