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authorDirk Eibach <dirk.eibach@gdsys.cc>2015-10-29 13:51:27 +0100
committerTom Rini <trini@konsulko.com>2015-11-12 18:04:12 -0500
commitdaa75b34828d45b7c1d63009188d45f4a32d06ba (patch)
treef193191fbaee4702c134d1c8a7a0567e14e0bf5e /drivers
parent37b33254c2cf6e47f2aaf40946ed6c98ba1057ed (diff)
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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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/pca953x.c4
1 files changed, 3 insertions, 1 deletions
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;
}