nvmem: check the return value of nvmem_add_cells()

[ Upstream commit fa72d847d68d7833b77a4bef944cf2c5baf56f49 ]

This function can fail so check its return value in nvmem_register()
and act accordingly.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index aa16578..7c530c8 100644 (file)
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -516,11 +516,17 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
                        goto err_device_del;
        }
 
-       if (config->cells)
-               nvmem_add_cells(nvmem, config->cells, config->ncells);
+       if (config->cells) {
+               rval = nvmem_add_cells(nvmem, config->cells, config->ncells);
+               if (rval)
+                       goto err_teardown_compat;
+       }
 
        return nvmem;
 
+err_teardown_compat:
+       if (config->compat)
+               device_remove_bin_file(nvmem->base_dev, &nvmem->eeprom);
 err_device_del:
        device_del(&nvmem->dev);
 err_put_device: