[PATCH 1/2] clk: at91: pmc: do not continue if compatible not located

[PATCH 1/2] clk: at91: pmc: do not continue if compatible not located

[Claudiu Beznea]

pmc_register_ops() is called for all AT91 devices. Return
-ENODEV in case of_find_matching_node() returns NULL.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/clk/at91/pmc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index b71515acdec1..bf0570e66fc1 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -274,6 +274,8 @@ static int __init pmc_register_ops(void)
 	struct device_node *np;
 
 	np = of_find_matching_node(NULL, sama5d2_pmc_dt_ids);
+	if (!np)
+		return -ENODEV;
 
 	pmcreg = device_node_to_regmap(np);
 	if (IS_ERR(pmcreg))
-- 
2.7.4

[PATCH 2/2] clk: at91: pmc: decrement node's refcount

[Claudiu Beznea]

of_find_matching_node() increment node's refcount. Call
of_node_put() to decrement it after it was used.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/clk/at91/pmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index bf0570e66fc1..e164069c81bd 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -278,6 +278,7 @@ static int __init pmc_register_ops(void)
 		return -ENODEV;
 
 	pmcreg = device_node_to_regmap(np);
+	of_node_put(np);
 	if (IS_ERR(pmcreg))
 		return PTR_ERR(pmcreg);
 
-- 
2.7.4

Re: [PATCH 2/2] clk: at91: pmc: decrement node's refcount

[Stephen Boyd]

Quoting Claudiu Beznea (2020-05-03 05:18:09)
> of_find_matching_node() increment node's refcount. Call
> of_node_put() to decrement it after it was used.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---

Applied to clk-next

Re: [PATCH 1/2] clk: at91: pmc: do not continue if compatible not located

[Stephen Boyd]

Quoting Claudiu Beznea (2020-05-03 05:18:08)
> pmc_register_ops() is called for all AT91 devices. Return
> -ENODEV in case of_find_matching_node() returns NULL.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---

Applied to clk-next