[PATCH 15/20] spi: img-spfi: fix controller deregistration

[Johan Hovold]

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

Fixes: deba25800a12 ("spi: Add driver for IMG SPFI controller")
Cc: stable@xxxxxxxxxxxxxxx	# 3.19
Cc: Andrew Bresticker <abrestic@xxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
 drivers/spi/spi-img-spfi.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
index 902fb64815c9..57625a3ce2f2 100644
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -643,7 +643,7 @@ static int img_spfi_probe(struct platform_device *pdev)
 	pm_runtime_set_active(spfi->dev);
 	pm_runtime_enable(spfi->dev);
 
-	ret = devm_spi_register_controller(spfi->dev, host);
+	ret = spi_register_controller(host);
 	if (ret)
 		goto disable_pm;
 
@@ -669,6 +669,10 @@ static void img_spfi_remove(struct platform_device *pdev)
 	struct spi_controller *host = platform_get_drvdata(pdev);
 	struct img_spfi *spfi = spi_controller_get_devdata(host);
 
+	spi_controller_get(host);
+
+	spi_unregister_controller(host);
+
 	if (spfi->tx_ch)
 		dma_release_channel(spfi->tx_ch);
 	if (spfi->rx_ch)
@@ -679,6 +683,8 @@ static void img_spfi_remove(struct platform_device *pdev)
 		clk_disable_unprepare(spfi->spfi_clk);
 		clk_disable_unprepare(spfi->sys_clk);
 	}
+
+	spi_controller_put(host);
 }
 
 #ifdef CONFIG_PM
-- 
2.52.0