[5/7] spi: txx9: Let spi core validate Tx/Rx buffers for non-zero length transfer

Commit Message

Axel Lin March 19, 2014, 3:58 a.m. UTC

Signed-off-by: Axel Lin <[e-mail]>
---
 drivers/spi/spi-txx9.c | 7 -------
 1 file changed, 7 deletions(-)

Patch

diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c
index 820b499..10ffbc0 100644
--- a/drivers/spi/spi-txx9.c
+++ b/drivers/spi/spi-txx9.c
@@ -299,17 +299,10 @@  static int txx9spi_transfer(struct spi_device *spi, struct spi_message *m)
 {
 	struct spi_master *master = spi->master;
 	struct txx9spi *c = spi_master_get_devdata(master);
-	struct spi_transfer *t;
 	unsigned long flags;
 
 	m->actual_length = 0;
 
-	/* check each transfer's parameters */
-	list_for_each_entry(t, &m->transfers, transfer_list) {
-		if (!t->tx_buf && !t->rx_buf && t->len)
-			return -EINVAL;
-	}
-
 	spin_lock_irqsave(&c->lock, flags);
 	list_add_tail(&m->queue, &c->queue);
 	queue_work(c->workqueue, &c->work);