[PATCH 05/26] spi: omap2-mcspi: fix controller deregistration

[Johan Hovold]

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

Fixes: ccdc7bf92573 ("SPI: omap2_mcspi driver")
Cc: stable@xxxxxxxxxxxxxxx	# 2.6.23
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
 drivers/spi/spi-omap2-mcspi.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index a3468e47e77d..56b30ff58771 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -1592,7 +1592,7 @@ static int omap2_mcspi_probe(struct platform_device *pdev)
 	if (status < 0)
 		goto disable_pm;
 
-	status = devm_spi_register_controller(&pdev->dev, ctlr);
+	status = spi_register_controller(ctlr);
 	if (status < 0)
 		goto disable_pm;
 
@@ -1613,11 +1613,17 @@ static void omap2_mcspi_remove(struct platform_device *pdev)
 	struct spi_controller *ctlr = platform_get_drvdata(pdev);
 	struct omap2_mcspi *mcspi = spi_controller_get_devdata(ctlr);
 
+	spi_controller_get(ctlr);
+
+	spi_unregister_controller(ctlr);
+
 	omap2_mcspi_release_dma(ctlr);
 
 	pm_runtime_dont_use_autosuspend(mcspi->dev);
 	pm_runtime_put_sync(mcspi->dev);
 	pm_runtime_disable(&pdev->dev);
+
+	spi_controller_put(ctlr);
 }
 
 /* work with hotplug and coldplug */
-- 
2.52.0