From 061a320b32d47438d64d64b412c0ea2c323a1470 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Tue, 10 Mar 2020 13:22:51 +0000 Subject: [PATCH] nvmem: core: validate nvmem config before parsing nvmem provider has to provide either reg_read/write, add a check to enforce this. Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20200310132257.23358-9-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/nvmem/core.c | 3 +++ 1 file changed, 3 insertions(+) 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);