Aug 23 2015

mmc: usdhi6rol0: fix error return code 

Author: Julia Lawall <Julia.Lawall@lip6.fr>

Propagate error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// 
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// 

Signed-off-by: Julia Lawall 
Signed-off-by: Ulf Hansson 

---
 drivers/mmc/host/usdhi6rol0.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
 
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index b505cbc2..4498e92 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -1737,8 +1737,10 @@ static int usdhi6_probe(struct platform_device *pdev)
 	}
 
 	host->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(host->clk))
+	if (IS_ERR(host->clk)) {
+		ret = PTR_ERR(host->clk);
 		goto e_free_mmc;
+	}
 
 	host->imclk = clk_get_rate(host->clk);

qlambert