[U-Boot] [PATCH] mxc_spi: bugfix for double incrementing read pointer on unaligned buffers in spi_xchg_single
Timo Herbrecher
t.herbrecher at gateware.de
Wed Aug 14 10:06:05 CEST 2013
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 at gateware.de>
---
drivers/spi/mxc_spi.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c
index fd72a65..95dd03f 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(®s->txdata, data);
--
1.7.0.4
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