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path: root/drivers/nvmem/core.c
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Diffstat (limited to 'drivers/nvmem/core.c')
-rw-r--r--drivers/nvmem/core.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 9b18ce90f907..27f67dfa649d 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -44,6 +44,7 @@ struct nvmem_cell {
int bytes;
int bit_offset;
int nbits;
+ struct device_node *np;
struct nvmem_device *nvmem;
struct list_head node;
};
@@ -298,6 +299,7 @@ static void nvmem_cell_drop(struct nvmem_cell *cell)
mutex_lock(&nvmem_mutex);
list_del(&cell->node);
mutex_unlock(&nvmem_mutex);
+ of_node_put(cell->np);
kfree(cell->name);
kfree(cell);
}
@@ -530,6 +532,7 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)
return -ENOMEM;
cell->nvmem = nvmem;
+ cell->np = of_node_get(child);
cell->offset = be32_to_cpup(addr++);
cell->bytes = be32_to_cpup(addr);
cell->name = kasprintf(GFP_KERNEL, "%pOFn", child);
@@ -960,14 +963,13 @@ out:
#if IS_ENABLED(CONFIG_OF)
static struct nvmem_cell *
-nvmem_find_cell_by_index(struct nvmem_device *nvmem, int index)
+nvmem_find_cell_by_node(struct nvmem_device *nvmem, struct device_node *np)
{
struct nvmem_cell *cell = NULL;
- int i = 0;
mutex_lock(&nvmem_mutex);
list_for_each_entry(cell, &nvmem->cells, node) {
- if (index == i++)
+ if (np == cell->np)
break;
}
mutex_unlock(&nvmem_mutex);
@@ -1011,7 +1013,7 @@ struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, const char *id)
if (IS_ERR(nvmem))
return ERR_CAST(nvmem);
- cell = nvmem_find_cell_by_index(nvmem, index);
+ cell = nvmem_find_cell_by_node(nvmem, cell_np);
if (!cell) {
__nvmem_device_put(nvmem);
return ERR_PTR(-ENOENT);