[patch] spi/xilinx: signedness issue checking platform_get_irq()

[Dan Carpenter]

"xspi->irq" is unsigned int so it's never less than zero.  I have added
a cast.

Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index fea815c..e5201fb 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -442,7 +442,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
 	xspi_init_hw(xspi);
 
 	xspi->irq = platform_get_irq(pdev, 0);
-	if (xspi->irq < 0) {
+	if ((int)xspi->irq < 0) {
 		ret = xspi->irq;
 		goto put_master;
 	}