[PATCH 4/7] spi: omap2-mcspi: Let spi core validate Tx/Rx buffers for non-zero length transfer

[Axel Lin]

Signed-off-by: Axel Lin <axel....@ingics.com>
---
 drivers/spi/spi-omap2-mcspi.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 2941c5b..a0746a7 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -1081,10 +1081,6 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, 
struct spi_message *m)
 
        omap2_mcspi_set_enable(spi, 0);
        list_for_each_entry(t, &m->transfers, transfer_list) {
-               if (t->tx_buf == NULL && t->rx_buf == NULL && t->len) {
-                       status = -EINVAL;
-                       break;
-               }
                if (par_override ||
                    (t->speed_hz != spi->max_speed_hz) ||
                    (t->bits_per_word != spi->bits_per_word)) {
@@ -1212,16 +1208,6 @@ static int omap2_mcspi_transfer_one_message(struct 
spi_master *master,
                void            *rx_buf = t->rx_buf;
                unsigned        len = t->len;
 
-               if ((len && !(rx_buf || tx_buf))) {
-                       dev_dbg(mcspi->dev, "transfer: %d Hz, %d %s%s, %d 
bpw\n",
-                                       t->speed_hz,
-                                       len,
-                                       tx_buf ? "tx" : "",
-                                       rx_buf ? "rx" : "",
-                                       t->bits_per_word);
-                       return -EINVAL;
-               }
-
                if (m->is_dma_mapped || len < DMA_MIN_BYTES)
                        continue;
 
-- 
1.8.3.2



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