| Message ID | 1550928043-14889-11-git-send-email-Julia.Lawall@lip6.fr (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | add missing of_node_put after of_device_is_available | expand |
On 23-02-19, 14:20, Julia Lawall wrote: > Add an of_node_put when a tested device node is not available. > > The semantic patch that fixes this problem is as follows > (http://coccinelle.lip6.fr): > > // <smpl> > @@ > identifier f; > local idexpression e; > expression x; > @@ > > e = f(...); > ... when != of_node_put(e) > when != x = e > when != e = x > when any > if (<+...of_device_is_available(e)...+>) { > ... when != of_node_put(e) > ( > return e; > | > + of_node_put(e); > return ...; > ) > } > // </smpl> > > Fixes: f525a670533d9 ("cpufreq: ap806: add cpufreq driver for Armada 8K") > Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> > > --- > drivers/cpufreq/armada-8k-cpufreq.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff -u -p a/drivers/cpufreq/armada-8k-cpufreq.c b/drivers/cpufreq/armada-8k-cpufreq.c > --- a/drivers/cpufreq/armada-8k-cpufreq.c > +++ b/drivers/cpufreq/armada-8k-cpufreq.c > @@ -128,8 +128,10 @@ static int __init armada_8k_cpufreq_init > struct cpumask cpus; > > node = of_find_compatible_node(NULL, NULL, "marvell,ap806-cpu-clock"); > - if (!node || !of_device_is_available(node)) > + if (!node || !of_device_is_available(node)) { > + of_node_put(node); > return -ENODEV; > + } > > nb_cpus = num_possible_cpus(); > freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL); Applied. Thanks.
diff -u -p a/drivers/cpufreq/armada-8k-cpufreq.c b/drivers/cpufreq/armada-8k-cpufreq.c --- a/drivers/cpufreq/armada-8k-cpufreq.c +++ b/drivers/cpufreq/armada-8k-cpufreq.c @@ -128,8 +128,10 @@ static int __init armada_8k_cpufreq_init struct cpumask cpus; node = of_find_compatible_node(NULL, NULL, "marvell,ap806-cpu-clock"); - if (!node || !of_device_is_available(node)) + if (!node || !of_device_is_available(node)) { + of_node_put(node); return -ENODEV; + } nb_cpus = num_possible_cpus(); freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL);
Add an of_node_put when a tested device node is not available. The semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ identifier f; local idexpression e; expression x; @@ e = f(...); ... when != of_node_put(e) when != x = e when != e = x when any if (<+...of_device_is_available(e)...+>) { ... when != of_node_put(e) ( return e; | + of_node_put(e); return ...; ) } // </smpl> Fixes: f525a670533d9 ("cpufreq: ap806: add cpufreq driver for Armada 8K") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> --- drivers/cpufreq/armada-8k-cpufreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)