On 20/04/2021 21:12, Christophe JAILLET wrote:
'for_each_child_of_node' performs an of_node_get on each iteration, so a
return from the middle of the loop requires an of_node_put.
Fixes: e888d445ac33 ("nvmem: resolve cells from DT at registration time")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/nvmem/core.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index bca671ff4e54..4375e52ba6c2 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -686,12 +686,15 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)
continue;
if (len < 2 * sizeof(u32)) {
dev_err(dev, "nvmem: invalid reg on %pOF\n", child);
+ of_node_put(child);
return -EINVAL;
}
cell = kzalloc(sizeof(*cell), GFP_KERNEL);
- if (!cell)
+ if (!cell) {
+ of_node_put(child);
return -ENOMEM;
+ }
cell->nvmem = nvmem;
cell->np = of_node_get(child);
@@ -717,6 +720,7 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)
kfree_const(cell->name);
of_node_put(cell->np);
kfree(cell);
+ of_node_put(child);
two of_node_put looks bit confusing to the reader, can you move the
cell->np = of_node_get(child); just before nvmem_cell_add(cell);
so that we can remove extra put.
Was this reported by some kind of static analysis tool?
--srini
return -EINVAL;
}
