FAILED: patch "[PATCH] spi: mxs: fix controller deregistration" failed to apply to 6.1-stable tree

The patch below does not apply to the 6.1-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 <[email protected]>.

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-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x 8b0d0011af20fb547aa67a1cefbf320992fd5e92
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026051540-overlying-striving-3883@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

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

From 8b0d0011af20fb547aa67a1cefbf320992fd5e92 Mon Sep 17 00:00:00 2001
From: Johan Hovold <[email protected]>
Date: Fri, 10 Apr 2026 10:17:33 +0200
Subject: [PATCH] spi: mxs: fix controller deregistration

Make sure to deregister the controller before releasing underlying resources like DMA during driver unbind.

index b3301c69e2de..0164e04d59a1 100644
@@ -619,7 +619,7 @@ static int mxs_spi_probe(struct platform_device *pdev)
 	if (ret)
 		goto out_pm_runtime_put;
 
-	ret = devm_spi_register_controller(&pdev->dev, host);
+	ret = spi_register_controller(host);
 	if (ret) {
 		dev_err(&pdev->dev, "Cannot register SPI host, %d\n", ret);
 		goto out_pm_runtime_put;

@@ -650,11 +650,17 @@ static void mxs_spi_remove(struct platform_device *pdev)
 	spi = spi_controller_get_devdata(host);
 	ssp = &spi->ssp;
 
+	spi_controller_get(host);
+
+	spi_unregister_controller(host);
+
 	pm_runtime_disable(&pdev->dev);
 	if (!pm_runtime_status_suspended(&pdev->dev))
 		mxs_spi_runtime_suspend(&pdev->dev);
 
 	dma_release_channel(ssp->dmach);
+
+	spi_controller_put(host);
 }
 
 static struct platform_driver mxs_spi_driver = {