linux-kernel - [PATCH] spi: spi-xilinx: fix for_each

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Message-ID: <alpine.DEB.2.22.394.2202082148490.52266@hadrien>
Date:   Tue, 8 Feb 2022 21:51:30 +0100 (CET)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Amit Kumar Mahapatra <amit.kumar-mahapatra@...inx.com>,
        Michal Simek <monstr@...str.eu>,
        Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>,
        Tejas Prajapati Rameshchandra <tejaspra@...inx.com>,
        Naga Sureshkumar Relli <nagasure@...inx.com>,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>,
        Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
        Mark Brown <broonie@...nel.org>
cc:     linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kbuild-all@...ts.01.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] spi: spi-xilinx: fix for_each_child.cocci warnings

From: kernel test robot <lkp@...el.com>

After for_each_available_child_of_node, of_node_put is needed before break
and return.

Generated by: scripts/coccinelle/iterators/for_each_child.cocci

Fixes: 3973536c4560 ("spi: spi-xilinx: Updated axi-qspi controller driver")
CC: Amit Kumar Mahapatra <amit.kumar-mahapatra@...inx.com>
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: kernel test robot <lkp@...el.com>
Signed-off-by: Julia Lawall <julia.lawall@...ia.fr>
---

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15
head:   1183ce490adb103e5e569b8ebd74c50c885ddc05
commit: 3973536c456079bf3d09e9a97bf33d29422b183f [861/872] spi: spi-xilinx: Updated axi-qspi controller driver
:::::: branch date: 7 days ago
:::::: commit date: 7 days ago

 spi-xilinx.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -693,13 +693,16 @@ static int xilinx_spi_probe(struct platf
 		if (startup_block) {
 			ret = of_property_read_u32(nc, "reg",
 						   &cs_num);
-			if (ret < 0)
+			if (ret < 0) {
+				of_node_put(nc);
 				return -EINVAL;
+			}
 		}
 		ret = of_property_read_u32(nc, "spi-rx-bus-width",
 					   &rx_bus_width);
 		if (!ret) {
 			xspi->rx_bus_width = rx_bus_width;
+			of_node_put(nc);
 			break;
 		}
 	}