From: Nishka Dasgupta <nishkadg.linux@gmail.com>
Date: Thu, 15 Aug 2019 06:00:14 +0000 (+0530)
Subject: ata: libahci_platform: Add of_node_put() before loop exit
X-Git-Tag: v5.4-rc1~54^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d7f76f36a8b4dc8eff0c22819e4a5d55b0dee62a;p=platform%2Fkernel%2Flinux-rpi.git

ata: libahci_platform: Add of_node_put() before loop exit

Each iteration of for_each_child_of_node puts the previous node, but
in the case of a goto from the middle of the loop, there is no put,
thus causing a memory leak. Add an of_node_put before three such goto
statements.
Issue found with Coccinelle.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index 9e9583a..e742780 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -497,6 +497,7 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
 
 			if (of_property_read_u32(child, "reg", &port)) {
 				rc = -EINVAL;
+				of_node_put(child);
 				goto err_out;
 			}
 
@@ -514,14 +515,18 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
 			if (port_dev) {
 				rc = ahci_platform_get_regulator(hpriv, port,
 								&port_dev->dev);
-				if (rc == -EPROBE_DEFER)
+				if (rc == -EPROBE_DEFER) {
+					of_node_put(child);
 					goto err_out;
+				}
 			}
 #endif
 
 			rc = ahci_platform_get_phy(hpriv, port, dev, child);
-			if (rc)
+			if (rc) {
+				of_node_put(child);
 				goto err_out;
+			}
 
 			enabled_ports++;
 		}