[PATCH 1/1] spi: fix return value check in bcm2835_spi_probe()

[Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>]

in bcm2835_spi_probe(), clk_prepare_enable() may fail, therefore,
the return value of clk_prepare_enable() should be checked, and
the function should return error if clk_prepare_enable() fails.

Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
---
 drivers/spi/spi-bcm2835.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index 3b253da98c05..7dfa1b3bd069 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -1363,7 +1363,9 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 	if (bs->irq <= 0)
 		return bs->irq ? bs->irq : -ENODEV;
 
-	clk_prepare_enable(bs->clk);
+	err = clk_prepare_enable(bs->clk);
+	if (err)
+		return err;
 	bs->clk_hz = clk_get_rate(bs->clk);
 
 	err = bcm2835_dma_init(ctlr, &pdev->dev, bs);
-- 
2.17.1