spi: spi-davinci: Fix variable type

'prescale' contains the return value of davinci_spi_get_prescale()
which is a signed integer. Convert 'prescale' to integer to silence
the following warning:
drivers/spi/spi-davinci.c:318 davinci_spi_setup_transfer() warn:
unsigned 'prescale' is never less than zero.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index 8fbfe2483ffdd12c20683e50194877c1a1ac85ca..8a04f1e05db278f415733778fe6da46b3299f591 100644 (file)
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -279,7 +279,8 @@ static int davinci_spi_setup_transfer(struct spi_device *spi,
        struct davinci_spi *dspi;
        struct davinci_spi_config *spicfg;
        u8 bits_per_word = 0;
-       u32 hz = 0, spifmt = 0, prescale = 0;
+       u32 hz = 0, spifmt = 0;
+       int prescale;
 
        dspi = spi_master_get_devdata(spi->master);
        spicfg = (struct davinci_spi_config *)spi->controller_data;