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

walter harms
2011-06-01T17:54:07Z

Am 01.06.2011 19:10, schrieb Julia Lawall:
> From: Julia Lawall <julia@diku.dk>
>
> 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@diku.dk>
>
> ---
> 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;
> }
>

So failed_req = failed_get, is that intended ?

re,
wh