h63xx: initial omap board support.

[linux-2.6-omap-h63xx.git] / drivers / spi / spi_mpc83xx.c

diff --git a/drivers/spi/spi_mpc83xx.c b/drivers/spi/spi_mpc83xx.c
index 070c6219e2d605a617c55547984cc61548a27bf3..ac0e3e4b3c543e480028d90829c7f5606b7fde71 100644 (file)
--- a/drivers/spi/spi_mpc83xx.c
+++ b/drivers/spi/spi_mpc83xx.c
@@ -267,16 +267,13 @@ int mpc83xx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
        cs->hw_mode |= SPMODE_LEN(bits_per_word);
 
        if ((mpc83xx_spi->spibrg / hz) > 64) {
+               cs->hw_mode |= SPMODE_DIV16;
                pm = mpc83xx_spi->spibrg / (hz * 64);
                if (pm > 16) {
-                       cs->hw_mode |= SPMODE_DIV16;
-                       pm /= 16;
-                       if (pm > 16) {
-                               dev_err(&spi->dev, "Requested speed is too "
-                                       "low: %d Hz. Will use %d Hz instead.\n",
-                                       hz, mpc83xx_spi->spibrg / 1024);
-                               pm = 16;
-                       }
+                       dev_err(&spi->dev, "Requested speed is too "
+                               "low: %d Hz. Will use %d Hz instead.\n",
+                               hz, mpc83xx_spi->spibrg / 1024);
+                       pm = 16;
                }
        } else
                pm = mpc83xx_spi->spibrg / (hz * 4);
@@ -315,11 +312,20 @@ static int mpc83xx_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
        if (t->bits_per_word)
                bits_per_word = t->bits_per_word;
        len = t->len;
-       if (bits_per_word > 8)
+       if (bits_per_word > 8) {
+               /* invalid length? */
+               if (len & 1)
+                       return -EINVAL;
                len /= 2;
-       if (bits_per_word > 16)
+       }
+       if (bits_per_word > 16) {
+               /* invalid length? */
+               if (len & 1)
+                       return -EINVAL;
                len /= 2;
+       }
        mpc83xx_spi->count = len;
+
        INIT_COMPLETION(mpc83xx_spi->done);
 
        /* enable rx ints */