summaryrefslogtreecommitdiffstats
path: root/drivers/nvmem
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/nvmem')
-rw-r--r--drivers/nvmem/core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index c05c4f4a7b9e..77d890d3623d 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -339,6 +339,9 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
if (!config->dev)
return ERR_PTR(-EINVAL);
+ if (!config->reg_read && !config->reg_write)
+ return ERR_PTR(-EINVAL);
+
nvmem = kzalloc(sizeof(*nvmem), GFP_KERNEL);
if (!nvmem)
return ERR_PTR(-ENOMEM);