On 20/08/11 08:02, Julia Lawall wrote: > From: Julia Lawall <julia@xxxxxxx> > > dma_channel_np has been accessed at this point, so decrease its reference > count before leaving the function. > > A simplified version of the semantic match that finds this problem is as > follows: (http://coccinelle.lip6.fr/) > > // <smpl> > @@ > identifier x; > expression E1!=0,E2,E3,E4; > statement S; > iterator I; > @@ > > ( > if (...) { ... when != of_node_put(x) > when != x = E3 > when != E3 = x > * return ...; > } > ... when != x = E2 > when != I(...,x,...) S > if (...) { ... when != x = E4 > of_node_put(x); ... return ...; } > ) > // </smpl> > > Signed-off-by: Julia Lawall <julia@xxxxxxx> > > --- > sound/soc/fsl/p1022_ds.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c > index 8fa4d5f..fcb862e 100644 > --- a/sound/soc/fsl/p1022_ds.c > +++ b/sound/soc/fsl/p1022_ds.c > @@ -297,8 +297,10 @@ static int get_dma_channel(struct device_node *ssi_np, > * dai->platform name should already point to an allocated buffer. > */ > ret = of_address_to_resource(dma_channel_np, 0, &res); > - if (ret) > + if (ret) { > + of_node_put(dma_channel_np); > return ret; > + } > snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", > (unsigned long long) res.start, dma_channel_np->name); > > Both Acked-by: Liam Girdwood <lrg@xxxxxx> -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
