X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fspi%2Fspi_bfin5xx.c;h=7fea3cf4588a37fa89589c8931862e704a62f156;hb=5871c6b0a52bb052c3891a787655043b90ae18e3;hp=6635e15e5a7acf0c7a27465ad662f274162b1494;hpb=5d69a029ab13ddef5bdad69174fabafada4a87fd;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 6635e15e5a7..7fea3cf4588 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -608,6 +608,7 @@ static void pump_transfers(unsigned long data)
 	u8 width;
 	u16 cr, dma_width, dma_config;
 	u32 tranf_success = 1;
+	u8 full_duplex = 0;
 
 	/* Get current state information */
 	message = drv_data->cur_msg;
@@ -658,6 +659,7 @@ static void pump_transfers(unsigned long data)
 	}
 
 	if (transfer->rx_buf != NULL) {
+		full_duplex = transfer->tx_buf != NULL;
 		drv_data->rx = transfer->rx_buf;
 		drv_data->rx_end = drv_data->rx + transfer->len;
 		dev_dbg(&drv_data->pdev->dev, "rx_buf is %p, rx_end is %p\n",
@@ -740,7 +742,8 @@ static void pump_transfers(unsigned long data)
 	 * successful use different way to r/w according to
 	 * drv_data->cur_chip->enable_dma
 	 */
-	if (drv_data->cur_chip->enable_dma && drv_data->len > 6) {
+	if (!full_duplex && drv_data->cur_chip->enable_dma
+				&& drv_data->len > 6) {
 
 		disable_dma(drv_data->dma_channel);
 		clear_dma_irqstat(drv_data->dma_channel);
@@ -828,7 +831,7 @@ static void pump_transfers(unsigned long data)
 		/* IO mode write then read */
 		dev_dbg(&drv_data->pdev->dev, "doing IO transfer\n");
 
-		if (drv_data->tx != NULL && drv_data->rx != NULL) {
+		if (full_duplex) {
 			/* full duplex mode */
 			BUG_ON((drv_data->tx_end - drv_data->tx) !=
 			       (drv_data->rx_end - drv_data->rx));
@@ -1396,7 +1399,7 @@ static int bfin5xx_spi_resume(struct platform_device *pdev)
 #define bfin5xx_spi_resume NULL
 #endif				/* CONFIG_PM */
 
-MODULE_ALIAS("bfin-spi-master");	/* for platform bus hotplug */
+MODULE_ALIAS("platform:bfin-spi");
 static struct platform_driver bfin5xx_spi_driver = {
 	.driver	= {
 		.name	= DRV_NAME,