diff options
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 34b71b1c69f4..aa1657831b70 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -934,6 +934,10 @@ struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *cell_id) return cell; } + /* NULL cell_id only allowed for device tree; invalid otherwise */ + if (!cell_id) + return ERR_PTR(-EINVAL); + return nvmem_cell_get_from_list(cell_id); } EXPORT_SYMBOL_GPL(nvmem_cell_get); |