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| author |  Peter Griffin <peter.griffin@linaro.org>
| 2024-02-20 11:50:12 +0000 |
|---|---|---|
| committer |  Lee Jones <lee@kernel.org>
| 2024-02-23 16:02:16 +0000 |
| commit | e28c28a34ee9fa2ea671a20e5e7064e6220d55e7 (patch) | |
| tree | a0f433570840a957ba35c84e68bdb45d7ca62f99 /drivers/mfd | |
| parent | mfd: syscon: Remove extern from function prototypes (diff) | |
| download | linux-e28c28a34ee9fa2ea671a20e5e7064e6220d55e7.tar.gz linux-e28c28a34ee9fa2ea671a20e5e7064e6220d55e7.tar.bz2 linux-e28c28a34ee9fa2ea671a20e5e7064e6220d55e7.zip | |
mfd: altera-sysmgr: Call of_node_put() only when of_parse_phandle() takes a ref
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>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/altera-sysmgr.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c index 0e52bd2ebd74..fb5f988e61f3 100644 --- a/drivers/mfd/altera-sysmgr.c +++ b/drivers/mfd/altera-sysmgr.c @@ -109,7 +109,9 @@ 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); |