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i2c: Fix pca953x endianess issue

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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>
This commit is contained in:
Dirk Eibach 2015-10-29 13:51:27 +01:00 • committed by Tom Rini
parent 37b33254c2
commit daa75b3482
1 changed files with 3 additions and 1 deletions
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4
drivers/gpio/pca953x.c
View file

@ -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;
}