From: Timo Herbrecher <t.herbrecher@gateware.de>
Date: Tue, 15 Oct 2013 18:35:09 +0000 (+0530)
Subject: spi: mxc_spi: Fix double incrementing read pointer for unaligned buffers
X-Git-Tag: v2013.10~4
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=6d5ce1bd0048617d48c05de1a84fae8696081127;p=u-boot

spi: mxc_spi: Fix double incrementing read pointer for unaligned buffers

If dout buffer is not 32 bit-aligned or data to transmit is not multiple
of 32 bit the read data pointer is already incremented on single byte reads.

Signed-off-by: Timo Herbrecher <t.herbrecher@gateware.de>
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
---

diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c
index fd72a65d3a..95dd03f7b3 100644
--- a/drivers/spi/mxc_spi.c
+++ b/drivers/spi/mxc_spi.c
@@ -255,8 +255,8 @@ int spi_xchg_single(struct spi_slave *slave, unsigned int bitlen,
 			} else {
 				data = *(u32 *)dout;
 				data = cpu_to_be32(data);
+				dout += 4;
 			}
-			dout += 4;
 		}
 		debug("Sending SPI 0x%x\n", data);
 		reg_write(&regs->txdata, data);