X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fspi%2Fspi_s3c24xx.c;h=0885cc357a371552dc2190a6da682f98a652abdb;hb=90621ed829ac64eb25b4d1214e9a5155e5c67ff2;hp=e75103aac79054706920dabe78301c790c083e3d;hpb=adf6d34e460387ee3e8f1e1875d52bff51212c7d;p=linux-2.6

diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index e75103aac7..0885cc357a 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -125,10 +125,10 @@ static int s3c24xx_spi_setupxfer(struct spi_device *spi,
 	/* is clk = pclk / (2 * (pre+1)), or is it
 	 *    clk = (pclk * 2) / ( pre + 1) */
 
-	div = (div / 2) - 1;
+	div /= 2;
 
-	if (div < 0)
-		div = 1;
+	if (div > 0)
+		div -= 1;
 
 	if (div > 255)
 		div = 255;
@@ -169,7 +169,7 @@ static int s3c24xx_spi_setup(struct spi_device *spi)
 	}
 
 	dev_dbg(&spi->dev, "%s: mode %d, %u bpw, %d hz\n",
-		__FUNCTION__, spi->mode, spi->bits_per_word,
+		__func__, spi->mode, spi->bits_per_word,
 		spi->max_speed_hz);
 
 	return 0;
@@ -192,8 +192,11 @@ static int s3c24xx_spi_txrx(struct spi_device *spi, struct spi_transfer *t)
 	hw->len = t->len;
 	hw->count = 0;
 
+	init_completion(&hw->done);
+
 	/* send the first byte */
 	writeb(hw_txbyte(hw, 0), hw->regs + S3C2410_SPTDAT);
+
 	wait_for_completion(&hw->done);
 
 	return hw->count;
@@ -235,6 +238,7 @@ static irqreturn_t s3c24xx_spi_irq(int irq, void *dev)
 
 static int __init s3c24xx_spi_probe(struct platform_device *pdev)
 {
+	struct s3c2410_spi_info *pdata;
 	struct s3c24xx_spi *hw;
 	struct spi_master *master;
 	struct resource *res;
@@ -251,10 +255,10 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
 	memset(hw, 0, sizeof(struct s3c24xx_spi));
 
 	hw->master = spi_master_get(master);
-	hw->pdata = pdev->dev.platform_data;
+	hw->pdata = pdata = pdev->dev.platform_data;
 	hw->dev = &pdev->dev;
 
-	if (hw->pdata == NULL) {
+	if (pdata == NULL) {
 		dev_err(&pdev->dev, "No platform data supplied\n");
 		err = -ENOENT;
 		goto err_no_pdata;
@@ -263,6 +267,10 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, hw);
 	init_completion(&hw->done);
 
+	/* setup the master state. */
+
+	master->num_chipselect = hw->pdata->num_cs;
+
 	/* setup the state for the bitbang driver */
 
 	hw->bitbang.master         = hw->master;
@@ -330,13 +338,13 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
 
 	/* setup any gpio we can */
 
-	if (!hw->pdata->set_cs) {
+	if (!pdata->set_cs) {
 		hw->set_cs = s3c24xx_spi_gpiocs;
 
-		s3c2410_gpio_setpin(hw->pdata->pin_cs, 1);
-		s3c2410_gpio_cfgpin(hw->pdata->pin_cs, S3C2410_GPIO_OUTPUT);
+		s3c2410_gpio_setpin(pdata->pin_cs, 1);
+		s3c2410_gpio_cfgpin(pdata->pin_cs, S3C2410_GPIO_OUTPUT);
 	} else
-		hw->set_cs = hw->pdata->set_cs;
+		hw->set_cs = pdata->set_cs;
 
 	/* register our spi controller */