linux-kernel - [PATCH v2] nvmem: u-boot-env: improve error checking

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Date: Tue, 30 Jan 2024 19:42:17 +0000
From: Nick Spooner <nicholas.spooner@...gate.com>
To: "rafal@...ecki.pl" <rafal@...ecki.pl>, "srinivas.kandagatla@...aro.org"
	<srinivas.kandagatla@...aro.org>, Dan Carpenter <dan.carpenter@...aro.org>
CC: Evan Burgess <evan.burgess@...gate.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "kernel-janitors@...r.kernel.org"
	<kernel-janitors@...r.kernel.org>
Subject: [PATCH v2] nvmem: u-boot-env: improve error checking

Coverity scan reported CID 1575482: error handling issues; this patch
addresses this by adding error handling to u_boot_env_add_cells.

Signed-off-by: Nick Spooner <nicholas.spooner@...gate.com>
---
v2:
    Fix whitespace issues in previous version

 drivers/nvmem/u-boot-env.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/nvmem/u-boot-env.c b/drivers/nvmem/u-boot-env.c
index befbab156cda..c15de5f7fd99 100644
--- a/drivers/nvmem/u-boot-env.c
+++ b/drivers/nvmem/u-boot-env.c
@@ -95,6 +95,7 @@ static int u_boot_env_add_cells(struct u_boot_env *priv, uint8_t *buf,
 	struct device *dev = priv->dev;
 	char *data = buf + data_offset;
 	char *var, *value, *eq;
+	int rval;

 	for (var = data;
 	     var < data + data_len && *var;
@@ -119,7 +120,9 @@ static int u_boot_env_add_cells(struct u_boot_env *priv, uint8_t *buf,
 			info.read_post_process = u_boot_env_read_post_process_ethaddr;
 		}

-		nvmem_add_one_cell(nvmem, &info);
+		rval = nvmem_add_one_cell(nvmem, &info);
+		if (rval)
+			return rval;
 	}

 	return 0;
--
2.34.1