diff options
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/core.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 9c0592127d7e..408b521ee520 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -747,7 +747,9 @@ static struct nvmem_cell *nvmem_cell_get_from_list(const char *cell_id) * of_nvmem_cell_get() - Get a nvmem cell from given device node and cell id * * @np: Device tree node that uses the nvmem cell. - * @name: nvmem cell name from nvmem-cell-names property. + * @name: nvmem cell name from nvmem-cell-names property, or NULL + * for the cell at index 0 (the lone cell with no accompanying + * nvmem-cell-names property). * * Return: Will be an ERR_PTR() on error or a valid pointer * to a struct nvmem_cell. The nvmem_cell will be freed by the @@ -760,9 +762,12 @@ struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, struct nvmem_cell *cell; struct nvmem_device *nvmem; const __be32 *addr; - int rval, len, index; + int rval, len; + int index = 0; - index = of_property_match_string(np, "nvmem-cell-names", name); + /* if cell name exists, find index to the name */ + if (name) + index = of_property_match_string(np, "nvmem-cell-names", name); cell_np = of_parse_phandle(np, "nvmem-cells", index); if (!cell_np) |