[PATCH 3/4] remoteproc: add helper for optional ELF resource tables

[Ben Levinsky]

Add a small helper around rproc_elf_load_rsc_table() for remoteproc
drivers that treat a missing ELF resource table as optional. The helper
returns success on -EINVAL and propagates other failures unchanged.

Signed-off-by: Ben Levinsky <ben.levinsky at amd.com>
---
 drivers/remoteproc/remoteproc_internal.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
index 3724a47a9748..dff87e468837 100644
--- a/drivers/remoteproc/remoteproc_internal.h
+++ b/drivers/remoteproc/remoteproc_internal.h
@@ -146,6 +146,18 @@ static inline int rproc_mem_entry_iounmap(struct rproc *rproc,
 	return 0;
 }
 
+static inline int rproc_elf_load_rsc_table_optional(struct rproc *rproc,
+						    const struct firmware *fw)
+{
+	int ret;
+
+	ret = rproc_elf_load_rsc_table(rproc, fw);
+	if (ret == -EINVAL)
+		dev_dbg(&rproc->dev, "no resource table found\n");
+
+	return ret == -EINVAL ? 0 : ret;
+}
+
 static inline int rproc_prepare_device(struct rproc *rproc)
 {
 	if (rproc->ops->prepare)
-- 
2.34.1