[PATCH 5.15.y] spi: sun4i: fix controller deregistration

[Sasha Levin <sashal@kernel.org>]

From: Johan Hovold <johan@kernel.org>

[ Upstream commit 42108a2f03e0fdeabe9d02d085bdb058baa1189f ]

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

Fixes: b5f6517948cc ("spi: sunxi: Add Allwinner A10 SPI controller driver")
Cc: stable@vger.kernel.org	# 3.15
Cc: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260410081757.503099-19-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
[ renamed `host`/`spi_controller` to `master`/`spi_master` and kept `int` return type with `return 0` in remove ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-sun4i.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
index a8fba310d7004..ab99cc7438652 100644
--- a/drivers/spi/spi-sun4i.c
+++ b/drivers/spi/spi-sun4i.c
@@ -503,7 +503,7 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_idle(&pdev->dev);
 
-	ret = devm_spi_register_master(&pdev->dev, master);
+	ret = spi_register_master(master);
 	if (ret) {
 		dev_err(&pdev->dev, "cannot register SPI master\n");
 		goto err_pm_disable;
@@ -521,8 +521,16 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 
 static int sun4i_spi_remove(struct platform_device *pdev)
 {
+	struct spi_master *master = platform_get_drvdata(pdev);
+
+	spi_master_get(master);
+
+	spi_unregister_master(master);
+
 	pm_runtime_force_suspend(&pdev->dev);
 
+	spi_master_put(master);
+
 	return 0;
 }
 
-- 
2.53.0