spi: spi-mxs: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

While at it, rename 'out_free_dma' to 'out_disable_clk' so that it can properly
describe its purpose.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 92254a1672e7..ecc59444875c 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -563,7 +563,10 @@ static int mxs_spi_probe(struct platform_device *pdev)
                 goto out_master_free;
         }
 
-        clk_prepare_enable(ssp->clk);
+        ret = clk_prepare_enable(ssp->clk);
+        if (ret)
+                goto out_dma_release;
+
         clk_set_rate(ssp->clk, clk_freq);
         ssp->clk_rate = clk_get_rate(ssp->clk) / 1000;
 
@@ -574,13 +577,14 @@ static int mxs_spi_probe(struct platform_device *pdev)
         ret = spi_register_master(master);
         if (ret) {
                 dev_err(&pdev->dev, "Cannot register SPI master, %d\n", ret);
-                goto out_free_dma;
+                goto out_disable_clk;
         }
 
         return 0;
 
-out_free_dma:
+out_disable_clk:
         clk_disable_unprepare(ssp->clk);
+out_dma_release:
         dma_release_channel(ssp->dmach);
 out_master_free:
         spi_master_put(master);