X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fspi%2Fau1550_spi.c;h=072c4a595334dd41de5ed7d7ec2f9bc85d6817b4;hb=e7a05aa9e697ff6fc165d45671cdcca601942f62;hp=ae2b1af0dba48a6f7975fcfcdec95b62e63090e2;hpb=5335a40be6867eff986a31bcd8fc82a5cb1e16bb;p=linux-2.6

diff --git a/drivers/spi/au1550_spi.c b/drivers/spi/au1550_spi.c
index ae2b1af0db..072c4a5953 100644
--- a/drivers/spi/au1550_spi.c
+++ b/drivers/spi/au1550_spi.c
@@ -99,7 +99,7 @@ static dbdev_tab_t au1550_spi_mem_dbdev =
 static void au1550_spi_bits_handlers_set(struct au1550_spi *hw, int bpw);
 
 
-/**
+/*
  *  compute BRG and DIV bits to setup spi clock based on main input clock rate
  *  that was specified in platform data structure
  *  according to au1550 datasheet:
@@ -280,6 +280,9 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t)
 	return 0;
 }
 
+/* the spi->mode bits understood by this driver: */
+#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST)
+
 static int au1550_spi_setup(struct spi_device *spi)
 {
 	struct au1550_spi *hw = spi_master_get_devdata(spi->master);
@@ -292,6 +295,12 @@ static int au1550_spi_setup(struct spi_device *spi)
 		return -EINVAL;
 	}
 
+	if (spi->mode & ~MODEBITS) {
+		dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n",
+			spi->mode & ~MODEBITS);
+		return -EINVAL;
+	}
+
 	if (spi->max_speed_hz == 0)
 		spi->max_speed_hz = hw->freq_max;
 	if (spi->max_speed_hz > hw->freq_max
@@ -641,7 +650,7 @@ static int au1550_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
 	return hw->txrx_bufs(spi, t);
 }
 
-static irqreturn_t au1550_spi_irq(int irq, void *dev, struct pt_regs *regs)
+static irqreturn_t au1550_spi_irq(int irq, void *dev)
 {
 	struct au1550_spi *hw = dev;
 	return hw->irq_callback(hw);
@@ -949,6 +958,9 @@ static int __exit au1550_spi_remove(struct platform_device *pdev)
 	return 0;
 }
 
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:au1550-spi");
+
 static struct platform_driver au1550_spi_drv = {
 	.remove = __exit_p(au1550_spi_remove),
 	.driver = {