Ksawlii/kernel_samsung_a53x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mfd: altera-sysmgr: Call of_node_put() only when of_parse_phandle() takes a ref

Browse source 
[ Upstream commit e28c28a34ee9fa2ea671a20e5e7064e6220d55e7 ]

of_parse_phandle() returns a device_node with refcount incremented, which
the callee needs to call of_node_put() on when done. We should only call
of_node_put() when the property argument is provided though as otherwise
nothing has taken a reference on the node.

Fixes: f36e789a1f8d ("mfd: altera-sysmgr: Add SOCFPGA System Manager")
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20240220115012.471689-4-peter.griffin@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Peter Griffin 2024-02-20 11:50:12 +00:00 committed by Ksawlii
parent 63ecacb646
commit 1839f7daae
1 changed files with 3 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/mfd/altera-sysmgr.c
View file

@ -110,7 +110,9 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np,
dev = driver_find_device_by_of_node(&altr_sysmgr_driver.driver,
(void *)sysmgr_np);
of_node_put(sysmgr_np);
if (property)
of_node_put(sysmgr_np);
if (!dev)
return ERR_PTR(-EPROBE_DEFER);