FAILED: patch "[PATCH] spi: bcm63xx: fix controller deregistration" failed to apply to 5.15-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x c39e65a4e3b8e764efed0b2f5152a1a8547b80fd
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026051504-litter-fabulous-cf47@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From c39e65a4e3b8e764efed0b2f5152a1a8547b80fd Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Thu, 9 Apr 2026 14:04:04 +0200
Subject: [PATCH] spi: bcm63xx: fix controller deregistration

Make sure to deregister the controller before disabling underlying
resources like clocks during driver unbind.

Fixes: b42dfed83d95 ("spi: add Broadcom BCM63xx SPI controller driver")
Cc: stable@vger.kernel.org	# 3.4
Cc: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260409120419.388546-6-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c
index 47266bb23a33..40cd7efc4b54 100644
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -602,7 +602,7 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
 		goto out_clk_disable;
 
 	/* register and we are done */
-	ret = devm_spi_register_controller(dev, host);
+	ret = spi_register_controller(host);
 	if (ret) {
 		dev_err(dev, "spi register failed\n");
 		goto out_clk_disable;
@@ -625,11 +625,17 @@ static void bcm63xx_spi_remove(struct platform_device *pdev)
 	struct spi_controller *host = platform_get_drvdata(pdev);
 	struct bcm63xx_spi *bs = spi_controller_get_devdata(host);
 
+	spi_controller_get(host);
+
+	spi_unregister_controller(host);
+
 	/* reset spi block */
 	bcm_spi_writeb(bs, 0, SPI_INT_MASK);
 
 	/* HW shutdown */
 	clk_disable_unprepare(bs->clk);
+
+	spi_controller_put(host);
 }
 
 static int bcm63xx_spi_suspend(struct device *dev)