summaryrefslogtreecommitdiff
path: root/drivers/nvmem/core.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/nvmem/core.c')
-rw-r--r--drivers/nvmem/core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index b5b0cdc21d01..514d1dfc5630 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -936,6 +936,10 @@ 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);