FAILED: patch "[PATCH] spi: sifive: fix controller deregistration" failed to apply to 6.6-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.6-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-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 0f25236694a2854627c1597465a071e6bb6fe572
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026051547-backside-sermon-2557@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

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

From 0f25236694a2854627c1597465a071e6bb6fe572 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Fri, 10 Apr 2026 10:17:44 +0200
Subject: [PATCH] spi: sifive: fix controller deregistration

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

Note that clocks were also disabled before the recent commit
140039c23aca ("spi: sifive: Simplify clock handling with
devm_clk_get_enabled()").

Fixes: 484a9a68d669 ("spi: sifive: Add driver for the SiFive SPI controller")
Cc: stable@vger.kernel.org	# 5.1
Cc: Yash Shah <yash.shah@sifive.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260410081757.503099-15-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-sifive.c b/drivers/spi/spi-sifive.c
index 54adbc057af6..74a3e32fd2b5 100644
--- a/drivers/spi/spi-sifive.c
+++ b/drivers/spi/spi-sifive.c
@@ -392,7 +392,7 @@ static int sifive_spi_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "mapped; irq=%d, cs=%d\n",
 		 irq, host->num_chipselect);
 
-	ret = devm_spi_register_controller(&pdev->dev, host);
+	ret = spi_register_controller(host);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "spi_register_host failed\n");
 		goto put_host;
@@ -411,8 +411,14 @@ static void sifive_spi_remove(struct platform_device *pdev)
 	struct spi_controller *host = platform_get_drvdata(pdev);
 	struct sifive_spi *spi = spi_controller_get_devdata(host);
 
+	spi_controller_get(host);
+
+	spi_unregister_controller(host);
+
 	/* Disable all the interrupts just in case */
 	sifive_spi_write(spi, SIFIVE_SPI_REG_IE, 0);
+
+	spi_controller_put(host);
 }
 
 static int sifive_spi_suspend(struct device *dev)