linux-kernel - [PATCH RFC 2/4] Platform: OLPC: Fix handling of regulator registration error

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Date:   Tue,  1 Dec 2020 09:23:46 +0100
From:   Lubomir Rintel <lkundrak@...sk>
To:     Liam Girdwood <lgirdwood@...il.com>
Cc:     Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
        Lubomir Rintel <lkundrak@...sk>
Subject: [PATCH RFC 2/4] Platform: OLPC: Fix handling of regulator registration error

We wouldn't reset ec_priv previously. Let's handle handle the errors in
a single spot to fix this.

Signed-off-by: Lubomir Rintel <lkundrak@...sk>
---
 drivers/platform/olpc/olpc-ec.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c
index faecb73bd8430..2ad638583cc58 100644
--- a/drivers/platform/olpc/olpc-ec.c
+++ b/drivers/platform/olpc/olpc-ec.c
@@ -427,11 +427,8 @@ static int olpc_ec_probe(struct platform_device *pdev)
 
 	/* get the EC revision */
 	err = olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, &ec->version, 1);
-	if (err) {
-		ec_priv = NULL;
-		kfree(ec);
-		return err;
-	}
+	if (err)
+		goto error;
 
 	config.dev = pdev->dev.parent;
 	config.driver_data = ec;
@@ -441,12 +438,16 @@ static int olpc_ec_probe(struct platform_device *pdev)
 	if (IS_ERR(ec->dcon_rdev)) {
 		dev_err(&pdev->dev, "failed to register DCON regulator\n");
 		err = PTR_ERR(ec->dcon_rdev);
-		kfree(ec);
-		return err;
+		goto error;
 	}
 
 	ec->dbgfs_dir = olpc_ec_setup_debugfs();
 
+	return 0;
+
+error:
+	ec_priv = NULL;
+	kfree(ec);
 	return err;
 }
 
-- 
2.28.0