[PATCH 4/10] drivers/net/can/flexcan.c: add missing clk_put

From: Julia Lawall
Date: Wed Jun 01 2011 - 13:10:54 EST


From: Julia Lawall <julia@xxxxxxx>

The failed_get label is used after the call to clk_get has succeeded, so it
should be moved up above the call to clk_put.

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

// <smpl>
@r exists@
expression e1,e2;
statement S;
@@

e1 = clk_get@p1(...);
... when != e1 = e2
when != clk_put(e1)
when any
if (...) { ... when != clk_put(e1)
when != if (...) { ... clk_put(e1) ... }
* return@p3 ...;
} else S
// </smpl>

Signed-off-by: Julia Lawall <julia@xxxxxxx>

---
drivers/net/can/flexcan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index d499056..121739c 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -978,8 +978,8 @@ static int __devinit flexcan_probe(struct platform_device *pdev)
failed_map:
release_mem_region(mem->start, mem_size);
failed_req:
- clk_put(clk);
failed_get:
+ clk_put(clk);
failed_clock:
return err;
}

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/