For SPI_XFER_BEGIN | SPI_XFER_END the code sets data_out = NULL. In the debug statement we should not dereference this value. As we do not transfer any data the debug statement is not needed in this case anyway.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- drivers/spi/atcspi200_spi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/atcspi200_spi.c b/drivers/spi/atcspi200_spi.c index bc08914b9e..2638f2ab25 100644 --- a/drivers/spi/atcspi200_spi.c +++ b/drivers/spi/atcspi200_spi.c @@ -230,8 +230,10 @@ static int __atcspi200_spi_xfer(struct nds_spi_slave *ns, __atcspi200_spi_start(ns); break; } - debug("spi_xfer: data_out %08X(%p) data_in %08X(%p) data_len %u\n", - *(uint *)data_out, data_out, *(uint *)data_in, data_in, data_len); + if (data_out) + debug("spi_xfer: data_out %08X(%p) data_in %08X(%p) data_len %u\n", + *(uint *)data_out, data_out, *(uint *)data_in, + data_in, data_len); num_chunks = DIV_ROUND_UP(data_len, max_tran_len); din = data_in; dout = data_out;