linux-kernel - [PATCH 5.11 697/775] mtd: spi-nor: hisi-sfc: Put child node np on error path

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Date:   Mon,  1 Mar 2021 17:14:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Pan Bian <bianpan2016@....com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>
Subject: [PATCH 5.11 697/775] mtd: spi-nor: hisi-sfc: Put child node np on error path

From: Pan Bian <bianpan2016@....com>

commit fe6653460ee7a7dbe0cd5fd322992af862ce5ab0 upstream.

Put the child node np when it fails to get or register device.

Fixes: e523f11141bd ("mtd: spi-nor: add hisilicon spi-nor flash controller driver")
Cc: stable@...r.kernel.org
Signed-off-by: Pan Bian <bianpan2016@....com>
[ta: Add Fixes tag and Cc stable]
Signed-off-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
Link: https://lore.kernel.org/r/20210121091847.85362-1-bianpan2016@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/mtd/spi-nor/controllers/hisi-sfc.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/mtd/spi-nor/controllers/hisi-sfc.c
+++ b/drivers/mtd/spi-nor/controllers/hisi-sfc.c
@@ -399,8 +399,10 @@ static int hisi_spi_nor_register_all(str
 
 	for_each_available_child_of_node(dev->of_node, np) {
 		ret = hisi_spi_nor_register(np, host);
-		if (ret)
+		if (ret) {
+			of_node_put(np);
 			goto fail;
+		}
 
 		if (host->num_chip == HIFMC_MAX_CHIP_NUM) {
 			dev_warn(dev, "Flash device number exceeds the maximum chipselect number\n");