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nvmem: core: validate nvmem config before parsing

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nvmem provider has to provide either reg_read/write, add a check
to enforce this.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200310132257.23358-9-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Srinivas Kandagatla 2020-03-10 13:22:51 +00:00 committed by Greg Kroah-Hartman
parent a9c3766cb1
commit 061a320b32
1 changed files with 3 additions and 0 deletions
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3
drivers/nvmem/core.c
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@ -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);