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

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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>
This commit is contained in:
Timo Herbrecher 2013-10-16 00:05:09 +05:30 committed by Jagannadha Sutradharudu Teki
parent 21497ded5d
commit 6d5ce1bd00
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/mxc_spi.c
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@ -255,9 +255,9 @@ int spi_xchg_single(struct spi_slave *slave, unsigned int bitlen,
} else { } else {
data = *(u32 *)dout; data = *(u32 *)dout;
data = cpu_to_be32(data); data = cpu_to_be32(data);
}
dout += 4; dout += 4;
} }
}
debug("Sending SPI 0x%x\n", data); debug("Sending SPI 0x%x\n", data);
reg_write(&regs->txdata, data); reg_write(&regs->txdata, data);
nbytes -= 4; nbytes -= 4;