[PATCH 04/20] spi: atmel: fix controller deregistration

[Johan Hovold <johan@kernel.org>]

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

Fixes: 754ce4f29937 ("[PATCH] SPI: atmel_spi driver")
Cc: stable@vger.kernel.org	# 2.6.21
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/spi/spi-atmel.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 445d645585bf..42db85d7ff8e 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1654,7 +1654,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
-	ret = devm_spi_register_controller(&pdev->dev, host);
+	ret = spi_register_controller(host);
 	if (ret)
 		goto out_free_dma;
 
@@ -1688,8 +1688,12 @@ static void atmel_spi_remove(struct platform_device *pdev)
 	struct spi_controller	*host = platform_get_drvdata(pdev);
 	struct atmel_spi	*as = spi_controller_get_devdata(host);
 
+	spi_controller_get(host);
+
 	pm_runtime_get_sync(&pdev->dev);
 
+	spi_unregister_controller(host);
+
 	/* reset the hardware and block queue progress */
 	if (as->use_dma) {
 		atmel_spi_stop_dma(host);
@@ -1716,6 +1720,8 @@ static void atmel_spi_remove(struct platform_device *pdev)
 
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+
+	spi_controller_put(host);
 }
 
 static int atmel_spi_runtime_suspend(struct device *dev)
-- 
2.52.0