spi/sh-hspi: fix return value check in hspi_probe().

According to its documentation, clk_get() returns a "valid IS_ERR() condition
containing errno", so we should call IS_ERR() rather than a NULL check.

Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 32f7b55fce093f07130bb7fd2af64f4d85609710..60cfae51c713818ef630f802db2e2e8c747f98d7 100644 (file)
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -290,7 +290,7 @@ static int hspi_probe(struct platform_device *pdev)
        }
 
        clk = clk_get(NULL, "shyway_clk");
-       if (!clk) {
+       if (IS_ERR(clk)) {
                dev_err(&pdev->dev, "shyway_clk is required\n");
                ret = -EINVAL;
                goto error0;