spi: rb4xx: Fix checking return value of devm_ioremap_resource()

devm_ioremap_resource() returns ERR_PTR on failure.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-rb4xx.c b/drivers/spi/spi-rb4xx.c
index 50f49f3..3641d0e 100644 (file)
--- a/drivers/spi/spi-rb4xx.c
+++ b/drivers/spi/spi-rb4xx.c
@@ -145,7 +145,7 @@ static int rb4xx_spi_probe(struct platform_device *pdev)
 
        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        spi_base = devm_ioremap_resource(&pdev->dev, r);
-       if (!spi_base)
+       if (IS_ERR(spi_base))
                return PTR_ERR(spi_base);
 
        master = spi_alloc_master(&pdev->dev, sizeof(*rbspi));