From: Dirk Eibach <dirk.eib...@gdsys.cc>
By reading 2 consecutive bytes from i2c to an u16 value
we have an endianess issue.
Signed-off-by: Dirk Eibach <dirk.eib...@gdsys.cc>
---
drivers/gpio/pca953x.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 7371cd4..c8c8637 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -88,8 +88,10 @@ static int pca953x_reg_write(uint8_t chip, uint addr, uint
mask, uint data)
if (i2c_read(chip, addr << 1, 1, (u8*)&valw, 2))
return -1;
+ valw = le16_to_cpu(valw);
valw &= ~mask;
valw |= data;
+ valw = cpu_to_le16(valw);
return i2c_write(chip, addr << 1, 1, (u8*)&valw, 2);
}
@@ -107,7 +109,7 @@ static int pca953x_reg_read(uint8_t chip, uint addr, uint
*data)
} else {
if (i2c_read(chip, addr << 1, 1, (u8*)&valw, 2))
return -1;
- *data = (int)valw;
+ *data = (uint)le16_to_cpu(valw);
}
return 0;
}
--
2.1.3
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