[U-Boot] [PATCH v2] mxc_spi: bugfix for double incrementing read pointer on unaligned buffers in spi_xchg_single

[Timo Herbrecher <t.herbrecher@gateware.de>]

Yes I tested it on the master-probe branch of u-boot-spi.git.


Am 7.10.2013 09:24, schrieb Jagan Teki:
> Did you test this on u-boot-spi.git with master-probe branch?
> 
> On Mon, Oct 7, 2013 at 12:20 PM, Timo Herbrecher
> <t.herbrecher@gateware.de> wrote:
>> 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>
>> ---
>>  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(&regs->txdata, data);
>> --
>> 1.7.0.4
>>
>>
> 
> 
>