[PATCH 6.1.y] spi: sun6i: fix controller deregistration

[Sasha Levin <sashal@kernel.org>]

From: Johan Hovold <johan@kernel.org>

[ Upstream commit d874a1c33aee0d88fb4ba2f8aeadaa9f1965209a ]

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

Fixes: 3558fe900e8a ("spi: sunxi: Add Allwinner A31 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/20260410081757.503099-20-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
[ renamed spi_controller APIs to spi_master equivalents and kept int return type for sun6i_spi_remove ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-sun6i.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
index d79853ba7792a..834957bb04ba8 100644
--- a/drivers/spi/spi-sun6i.c
+++ b/drivers/spi/spi-sun6i.c
@@ -688,7 +688,7 @@ static int sun6i_spi_probe(struct platform_device *pdev)
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&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;
@@ -714,12 +714,19 @@ static int sun6i_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);
 
 	if (master->dma_tx)
 		dma_release_channel(master->dma_tx);
 	if (master->dma_rx)
 		dma_release_channel(master->dma_rx);
+
+	spi_master_put(master);
+
 	return 0;
 }
 
-- 
2.53.0