i2c: Fix pca953x endianess issue

By reading 2 consecutive bytes from i2c to an u16 value
we have an endianess issue.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>

diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 7371cd4a87fdd7b7a64afbb39ed4fd80e402d6cc..c8c863765b6db72b86c2e6c468c518c3168b259f 100644 (file)
--- 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;
 }