spi/bcm63xx: check return value of clk_prepare_enable

Ensure we notice if the clock cannot be enabled for any reason and pass
the error down.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c
index e20a669..db6a47d 100644 (file)
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -399,7 +399,10 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
        }
 
        /* Initialize hardware */
-       clk_prepare_enable(bs->clk);
+       ret = clk_prepare_enable(bs->clk);
+       if (ret)
+               goto out_err;
+
        bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
 
        /* register and we are done */
@@ -452,8 +455,11 @@ static int bcm63xx_spi_resume(struct device *dev)
 {
        struct spi_master *master = dev_get_drvdata(dev);
        struct bcm63xx_spi *bs = spi_master_get_devdata(master);
+       int ret;
 
-       clk_prepare_enable(bs->clk);
+       ret = clk_prepare_enable(bs->clk);
+       if (ret)
+               return ret;
 
        spi_master_resume(master);