From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
commit de0534df93474f268486c486ea7e01b44a478026 upstream.
Current error path on failure of validating keepout regions is calling put_device, eventhough the device is not even registered at that point.
Fix this by adding proper error handling of freeing ida and nvmem.
Fixes: fd3bb8f54a88 ("nvmem: core: Add support for keepout regions") Cc: stable@vger.kernel.org Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Link: https://lore.kernel.org/r/20210806085947.22682-5-srinivas.kandagatla@linaro.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/nvmem/core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -824,8 +824,11 @@ struct nvmem_device *nvmem_register(cons
if (nvmem->nkeepout) { rval = nvmem_validate_keepouts(nvmem); - if (rval) - goto err_put_device; + if (rval) { + ida_free(&nvmem_ida, nvmem->id); + kfree(nvmem); + return ERR_PTR(rval); + } }
dev_dbg(&nvmem->dev, "Registering nvmem device %s\n", config->name);