[PATCH 1/4] nvmem: sync stub return values with linux code

[Marco Felsch]

Based on linux commit:
8<------------------------------------------------------------------------
commit 20167b70c894f20cd01e2579fad206de440816ef
Author: Bartosz Golaszewski <bgolaszewski at baylibre.com>
Date:   Fri Sep 21 06:40:22 2018 -0700

    nvmem: use EOPNOTSUPP instead of ENOSYS

    Checkpatch emits warnings when using ENOSYS. Some of the frameworks
    started using EOPNOTSUPP as return values for API functions when given
    subsystem is disabled in Kconfig.

    Signed-off-by: Bartosz Golaszewski <bgolaszewski at baylibre.com>
    Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
8<------------------------------------------------------------------------

Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
---
 include/linux/nvmem-consumer.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 9e0fd4265e..2f79014c0f 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -50,7 +50,7 @@ int nvmem_device_cell_write(struct nvmem_device *nvmem,
 static inline struct nvmem_cell *nvmem_cell_get(struct device_d *dev,
 						const char *name)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-EOPNOTSUPP);
 }
 
 static inline void nvmem_cell_put(struct nvmem_cell *cell)
@@ -59,26 +59,26 @@ static inline void nvmem_cell_put(struct nvmem_cell *cell)
 
 static inline char *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-EOPNOTSUPP);
 }
 
 static inline void *nvmem_cell_get_and_read(struct device_node *np,
 					    const char *cell_name,
 					    size_t bytes)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-EOPNOTSUPP);
 }
 
 static inline int nvmem_cell_write(struct nvmem_cell *cell,
 				    const char *buf, size_t len)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 
 static inline struct nvmem_device *nvmem_device_get(struct device_d *dev,
 						    const char *name)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-EOPNOTSUPP);
 }
 
 static inline void nvmem_device_put(struct nvmem_device *nvmem)
-- 
2.20.1