[PATCH] mfd: twl: endian fixups in i2c write and read wrappers.

From: jic23
Date: Sun Oct 13 2019 - 05:32:53 EST


From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

Use a local variable to ensure correct endian types for
intermediate results.

Identified by sparse when building the IIO driver.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
---
include/linux/mfd/twl.h | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/include/linux/mfd/twl.h b/include/linux/mfd/twl.h
index 44aff52a5002..089e8942223a 100644
--- a/include/linux/mfd/twl.h
+++ b/include/linux/mfd/twl.h
@@ -181,14 +181,18 @@ static inline int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg) {
}

static inline int twl_i2c_write_u16(u8 mod_no, u16 val, u8 reg) {
- val = cpu_to_le16(val);
- return twl_i2c_write(mod_no, (u8*) &val, reg, 2);
+ __le16 value;
+
+ value = cpu_to_le16(val);
+ return twl_i2c_write(mod_no, (u8 *) &value, reg, 2);
}

static inline int twl_i2c_read_u16(u8 mod_no, u16 *val, u8 reg) {
int ret;
- ret = twl_i2c_read(mod_no, (u8*) val, reg, 2);
- *val = le16_to_cpu(*val);
+ __le16 value;
+
+ ret = twl_i2c_read(mod_no, (u8 *) &value, reg, 2);
+ *val = le16_to_cpu(value);
return ret;
}

--
2.23.0