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| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2020-03-10 13:22:51 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-19 07:41:03 +0100 |
| commit | 061a320b32d47438d64d64b412c0ea2c323a1470 (patch) | |
| tree | 4b5238045c623eb9b6d634687e1bdc0c973a6d6c /drivers/nvmem/core.c | |
| parent | a9c3766cb19cdadf2776aba41b64470002645894 (diff) | |
| download | lwn-061a320b32d47438d64d64b412c0ea2c323a1470.tar.gz lwn-061a320b32d47438d64d64b412c0ea2c323a1470.zip | |
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 <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>
Diffstat (limited to 'drivers/nvmem/core.c')
| -rw-r--r-- | drivers/nvmem/core.c | 3 |
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); |