From: Dirk Eibach <dirk.eibach@gdsys.cc>
Date: Thu, 29 Oct 2015 12:51:27 +0000 (+0100)
Subject: i2c: Fix pca953x endianess issue
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=daa75b34828d45b7c1d63009188d45f4a32d06ba;p=u-boot.git

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 7371cd4a87..c8c863765b 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;
 }