linux-kernel - [PATCH] EDAC, altera: Add missing of_node

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Date:   Thu, 14 Feb 2019 14:39:07 +0800
From:   Huang Zijiang <huang.zijiang@....com.cn>
To:     thor.thayer@...ux.intel.com
Cc:     bp@...en8.de, mchehab@...nel.org, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org, wang.yi59@....com.cn,
        Huang Zijiang <huang.zijiang@....com.cn>
Subject: [PATCH] EDAC, altera: Add missing of_node_put()

The call to of_parse_phandle returns a node pointer with refcount
incremented thus it must be explicitly decremented here after the last
usage.

Signed-off-by: Huang Zijiang <huang.zijiang@....com.cn>
---
 drivers/edac/altera_edac.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index c89d82a..1bcd778 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -1046,14 +1046,17 @@ altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask,
 			return -ENODEV;
 		}
 
-		if (of_address_to_resource(sysmgr_np, 0, &res))
+		if (of_address_to_resource(sysmgr_np, 0, &res)) {
+			of_node_put(sysmgr_np);
 			return -ENOMEM;
+		}
 
 		/* Need physical address for SMCC call */
 		base = res.start;
 
 		ecc_mgr_map = regmap_init(NULL, NULL, (void *)base,
 					  &s10_sdram_regmap_cfg);
+		of_node_put(sysmgr_np);
 	}
 	of_node_put(np_eccmgr);
 	if (IS_ERR(ecc_mgr_map)) {
-- 
1.8.3.1