5 files changed, 22 insertions, 15 deletions

diff --git a/drivers/spi/at25.c b/drivers/spi/at25.c
index 8efa07e8b8c..e007833cca5 100644
--- a/drivers/spi/at25.c
+++ b/drivers/spi/at25.c
@@ -111,7 +111,8 @@ at25_ee_read(
 }
 
 static ssize_t
-at25_bin_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
+at25_bin_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+	      char *buf, loff_t off, size_t count)
 {
 	struct device		*dev;
 	struct at25_data	*at25;
@@ -236,7 +237,8 @@ at25_ee_write(struct at25_data *at25, char *buf, loff_t off, size_t count)
 }
 
 static ssize_t
-at25_bin_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
+at25_bin_write(struct kobject *kobj, struct bin_attribute *bin_attr,
+	       char *buf, loff_t off, size_t count)
 {
 	struct device		*dev;
 	struct at25_data	*at25;
@@ -314,7 +316,6 @@ static int at25_probe(struct spi_device *spi)
 	 */
 	at25->bin.attr.name = "eeprom";
 	at25->bin.attr.mode = S_IRUSR;
-	at25->bin.attr.owner = THIS_MODULE;
 	at25->bin.read = at25_bin_read;
 
 	at25->bin.size = at25->chip.byte_len;
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 1d8a2f6bb8e..8b2601de363 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -113,16 +113,16 @@ static void atmel_spi_next_xfer(struct spi_master *master,
 
 	len = as->remaining_bytes;
 
-	tx_dma = xfer->tx_dma;
-	rx_dma = xfer->rx_dma;
+	tx_dma = xfer->tx_dma + xfer->len - len;
+	rx_dma = xfer->rx_dma + xfer->len - len;
 
 	/* use scratch buffer only when rx or tx data is unspecified */
-	if (rx_dma == INVALID_DMA_ADDRESS) {
+	if (!xfer->rx_buf) {
 		rx_dma = as->buffer_dma;
 		if (len > BUFFER_SIZE)
 			len = BUFFER_SIZE;
 	}
-	if (tx_dma == INVALID_DMA_ADDRESS) {
+	if (!xfer->tx_buf) {
 		tx_dma = as->buffer_dma;
 		if (len > BUFFER_SIZE)
 			len = BUFFER_SIZE;
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index c3219b29b5a..4831edbae2d 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -411,7 +411,7 @@ EXPORT_SYMBOL_GPL(spi_alloc_master);
  */
 int spi_register_master(struct spi_master *master)
 {
-	static atomic_t		dyn_bus_id = ATOMIC_INIT((1<<16) - 1);
+	static atomic_t		dyn_bus_id = ATOMIC_INIT((1<<15) - 1);
 	struct device		*dev = master->cdev.dev;
 	int			status = -ENODEV;
 	int			dynamic = 0;
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 7d2d9ec6cac..48587c27050 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -582,14 +582,19 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id)
 	dev_dbg(&drv_data->pdev->dev, "in dma_irq_handler\n");
 	clear_dma_irqstat(CH_SPI);
 
+	/* Wait for DMA to complete */
+	while (get_dma_curr_irqstat(CH_SPI) & DMA_RUN)
+		continue;
+
 	/*
-	 * wait for the last transaction shifted out.  yes, these two
-	 * while loops are supposed to be the same (see the HRM).
+	 * wait for the last transaction shifted out.  HRM states:
+	 * at this point there may still be data in the SPI DMA FIFO waiting
+	 * to be transmitted ... software needs to poll TXS in the SPI_STAT
+	 * register until it goes low for 2 successive reads
 	 */
 	if (drv_data->tx != NULL) {
-		while (bfin_read_SPI_STAT() & TXS)
-			continue;
-		while (bfin_read_SPI_STAT() & TXS)
+		while ((bfin_read_SPI_STAT() & TXS) ||
+		       (bfin_read_SPI_STAT() & TXS))
 			continue;
 	}
 
@@ -1082,7 +1087,7 @@ static int setup(struct spi_device *spi)
  */
 static void cleanup(struct spi_device *spi)
 {
-	struct chip_data *chip = spi_get_ctldata((struct spi_device *)spi);
+	struct chip_data *chip = spi_get_ctldata(spi);
 
 	kfree(chip);
 }
diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c
index 51daa212c6b..656be4a5094 100644
--- a/drivers/spi/spi_imx.c
+++ b/drivers/spi/spi_imx.c
@@ -121,7 +121,7 @@
 							32.768 KHz Clock */
 
 /* SPI DMA Register Bit Fields & Masks */
-#define SPI_DMA_RHDMA	(0xF << 4)	/* RXFIFO Half Status */
+#define SPI_DMA_RHDMA	(0x1 << 4)	/* RXFIFO Half Status */
 #define SPI_DMA_RFDMA	(0x1 << 5)      /* RXFIFO Full Status */
 #define SPI_DMA_TEDMA	(0x1 << 6)      /* TXFIFO Empty Status */
 #define SPI_DMA_THDMA	(0x1 << 7)      /* TXFIFO Half Status */
@@ -1355,6 +1355,7 @@ static int setup(struct spi_device *spi)
 		spi->bits_per_word,
 		spi_speed_hz(SPI_CONTROL_DATARATE_MIN),
 		spi->max_speed_hz);
+	return status;
 
 err_first_setup:
 	kfree(chip);