linux-kernel - [PATCH 07/26] nvmem: check the return value of nvmem_add

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Message-Id: <20180921134026.4596-8-srinivas.kandagatla@linaro.org>
Date:   Fri, 21 Sep 2018 06:40:07 -0700
From:   srinivas.kandagatla@...aro.org
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 07/26] nvmem: check the return value of nvmem_add_cells()

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

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

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/nvmem/core.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 1ced9caa811b..0ef84441ebe5 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -512,11 +512,17 @@ 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:
-- 
2.19.0