nvmem: jz4780-efuse: fix build warnings on ARCH=x86_64 or riscv
kbuild-robot did find a type error in the min(a, b)
function used by this driver if built for x86_64 or riscv.
Althought it is very unlikely that this driver is built
for those platforms it could be used as a template
for something else and therefore should be correct.
The problem is that we implicitly cast a size_t to
unsigned int inside the implementation of the min() function.
Since size_t may differ on different compilers and
plaforms there may be warnings or not.
So let's use only size_t variables on all platforms.
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: srinivas.kandagatla@linaro.org
Cc: prasannatsmkumar@gmail.com
Cc: malat@debian.org
Cc: paul@crapouillou.net
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200310132257.23358-15-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/nvmem/jz4780-efuse.c b/drivers/nvmem/jz4780-efuse.c
index 51d1409..512e187 100644
--- a/drivers/nvmem/jz4780-efuse.c
+++ b/drivers/nvmem/jz4780-efuse.c
@@ -72,9 +72,9 @@ static int jz4780_efuse_read(void *context, unsigned int offset,
struct jz4780_efuse *efuse = context;
while (bytes > 0) {
- unsigned int start = offset & ~(JZ_EFU_READ_SIZE - 1);
- unsigned int chunk = min(bytes, (start + JZ_EFU_READ_SIZE)
- - offset);
+ size_t start = offset & ~(JZ_EFU_READ_SIZE - 1);
+ size_t chunk = min(bytes, (start + JZ_EFU_READ_SIZE)
+ - offset);
char buf[JZ_EFU_READ_SIZE];
unsigned int tmp;
u32 ctrl;