From 1f7b4d87874624f4beb25253900a25306a193b8b Mon Sep 17 00:00:00 2001
From: Douglas Anderson <dianders@chromium.org>
Date: Fri, 11 Jun 2021 09:33:47 +0100
Subject: [PATCH] nvmem: core: constify nvmem_cell_read_variable_common()
 return value

The caller doesn't modify the memory pointed to by the pointer so it
can be const.

Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210611083348.20170-9-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/nvmem/core.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -1615,9 +1615,9 @@ int nvmem_cell_read_u64(struct device *d
 }
 EXPORT_SYMBOL_GPL(nvmem_cell_read_u64);
 
-static void *nvmem_cell_read_variable_common(struct device *dev,
-					     const char *cell_id,
-					     size_t max_len, size_t *len)
+static const void *nvmem_cell_read_variable_common(struct device *dev,
+						   const char *cell_id,
+						   size_t max_len, size_t *len)
 {
 	struct nvmem_cell *cell;
 	int nbits;
@@ -1661,7 +1661,7 @@ int nvmem_cell_read_variable_le_u32(stru
 				    u32 *val)
 {
 	size_t len;
-	u8 *buf;
+	const u8 *buf;
 	int i;
 
 	buf = nvmem_cell_read_variable_common(dev, cell_id, sizeof(*val), &len);
@@ -1692,7 +1692,7 @@ int nvmem_cell_read_variable_le_u64(stru
 				    u64 *val)
 {
 	size_t len;
-	u8 *buf;
+	const u8 *buf;
 	int i;
 
 	buf = nvmem_cell_read_variable_common(dev, cell_id, sizeof(*val), &len);
