Commit 9b8e3ec3 authored by Yong Li's avatar Yong Li Committed by Linus Walleij

gpio: pca953x: Use correct u16 value for register word write

The current implementation only uses the first byte in val,
the second byte is always 0. Change it to use cpu_to_le16
to write the two bytes into the register

Cc: stable@vger.kernel.org
Signed-off-by: default avatarYong Li <sdliyong@gmail.com>
Reviewed-by: default avatarPhil Reid <preid@electromag.com.au>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 159f3cd9
...@@ -18,6 +18,7 @@ ...@@ -18,6 +18,7 @@
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/platform_data/pca953x.h> #include <linux/platform_data/pca953x.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <asm/unaligned.h>
#include <linux/of_platform.h> #include <linux/of_platform.h>
#include <linux/acpi.h> #include <linux/acpi.h>
...@@ -159,7 +160,7 @@ static int pca953x_write_regs(struct pca953x_chip *chip, int reg, u8 *val) ...@@ -159,7 +160,7 @@ static int pca953x_write_regs(struct pca953x_chip *chip, int reg, u8 *val)
switch (chip->chip_type) { switch (chip->chip_type) {
case PCA953X_TYPE: case PCA953X_TYPE:
ret = i2c_smbus_write_word_data(chip->client, ret = i2c_smbus_write_word_data(chip->client,
reg << 1, (u16) *val); reg << 1, cpu_to_le16(get_unaligned((u16 *)val)));
break; break;
case PCA957X_TYPE: case PCA957X_TYPE:
ret = i2c_smbus_write_byte_data(chip->client, reg << 1, ret = i2c_smbus_write_byte_data(chip->client, reg << 1,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment