arm: dma: check clk_get() result

clk_get() may return ERR_PTR(), if so propagate return code as
imx_dma_init() return code.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/dma-v1.c b/arch/arm/mach-imx/dma-v1.c
index dcb24a90998..e9f1769b49f 100644
--- a/arch/arm/mach-imx/dma-v1.c
+++ b/arch/arm/mach-imx/dma-v1.c
@@ -821,6 +821,8 @@ static int __init imx_dma_init(void)
                 return 0;
 
         dma_clk = clk_get(NULL, "dma");
+        if (IS_ERR(dma_clk))
+                return PTR_ERR(dma_clk);
         clk_enable(dma_clk);
 
         /* reset DMA module */