linux-kernel - [PATCH 4.9 15/45] spi: Fix controller unregister order harder

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Message-Id: <20201210142603.116258683@linuxfoundation.org>
Date:   Thu, 10 Dec 2020 15:26:29 +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, chenwenyong2@...wei.com,
        "zhangyi (F)" <yi.zhang@...wei.com>,
        yangerkun <yangerkun@...wei.com>, Lukas Wunner <lukas@...ner.de>
Subject: [PATCH 4.9 15/45] spi: Fix controller unregister order harder

From: Lukas Wunner <lukas@...ner.de>

Commit c7e41e1caa71 sought to backport upstream commit 84855678add8 to
the 4.9-stable tree but erroneously inserted a line at the wrong place.
Fix it.

Fixes: c7e41e1caa71 ("spi: Fix controller unregister order")
Reported-by: yangerkun <yangerkun@...wei.com>
Signed-off-by: Lukas Wunner <lukas@...ner.de>
---
 drivers/spi/spi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2025,13 +2025,13 @@ static int __unregister(struct device *d
  */
 void spi_unregister_master(struct spi_master *master)
 {
+	device_for_each_child(&master->dev, NULL, __unregister);
+
 	if (master->queued) {
 		if (spi_destroy_queue(master))
 			dev_err(&master->dev, "queue remove failed\n");
 	}
 
-	device_for_each_child(&master->dev, NULL, __unregister);
-
 	mutex_lock(&board_lock);
 	list_del(&master->list);
 	mutex_unlock(&board_lock);