From: Heiner Kallweit <[email protected]> Adding entries to nvmem_cells and deleting entries from it is protected by nvmem_cells_mutex. Therefore this mutex should also protect iterating over the list.
Signed-off-by: Heiner Kallweit <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> --- drivers/nvmem/core.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 0cbac71195b5..4c49285168fb 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -287,9 +287,15 @@ static struct nvmem_cell *nvmem_find_cell(const char *cell_id) { struct nvmem_cell *p; + mutex_lock(&nvmem_cells_mutex); + list_for_each_entry(p, &nvmem_cells, node) - if (p && !strcmp(p->name, cell_id)) + if (p && !strcmp(p->name, cell_id)) { + mutex_unlock(&nvmem_cells_mutex); return p; + } + + mutex_unlock(&nvmem_cells_mutex); return NULL; } -- 2.11.0
