linux-kernel - [PATCH] nvmem: Declare nvmem_cell

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Message-Id: <1464817961-4036-1-git-send-email-linux@roeck-us.net>
Date:	Wed,  1 Jun 2016 14:52:41 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH] nvmem: Declare nvmem_cell_read() consistently

nvmem_cell_read() is declared as void * if CONFIG_NVMEM is enabled, and
as char * otherwise. This can result in a build warning if CONFIG_NVMEM
is not enabled and a caller asigns the result to a type other than char *
without using a typecast. Use a consistent declaration to avoid the
problem.

Fixes: e2a5402ec7c6 ("nvmem: Add nvmem_device based consumer apis.")
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 include/linux/nvmem-consumer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 9bb77d3ed6e0..c2256d746543 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -74,7 +74,7 @@ static inline void nvmem_cell_put(struct nvmem_cell *cell)
 {
 }
 
-static inline char *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)
+static inline void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)
 {
 	return ERR_PTR(-ENOSYS);
 }
-- 
2.5.0