[PATCH 09/20] spi: cavium-thunderx: fix controller deregistration

[Johan Hovold <johan@kernel.org>]

Make sure to deregister the controller before disabling it to avoid
hanging or leaking resources associated with the queue when the queue
non-empty.

Fixes: 7347a6c7af8d ("spi: octeon: Add ThunderX driver")
Cc: stable@vger.kernel.org	# 4.9
Cc: Jan Glauber <jan.glauber@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/spi/spi-cavium-thunderx.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-cavium-thunderx.c b/drivers/spi/spi-cavium-thunderx.c
index 99aac40a1bba..f1a9aa696c87 100644
--- a/drivers/spi/spi-cavium-thunderx.c
+++ b/drivers/spi/spi-cavium-thunderx.c
@@ -70,7 +70,7 @@ static int thunderx_spi_probe(struct pci_dev *pdev,
 
 	pci_set_drvdata(pdev, host);
 
-	ret = devm_spi_register_controller(dev, host);
+	ret = spi_register_controller(host);
 	if (ret)
 		goto error;
 
@@ -90,8 +90,14 @@ static void thunderx_spi_remove(struct pci_dev *pdev)
 	if (!p)
 		return;
 
+	spi_controller_get(host);
+
+	spi_unregister_controller(host);
+
 	/* Put everything in a known state. */
 	writeq(0, p->register_base + OCTEON_SPI_CFG(p));
+
+	spi_controller_put(host);
 }
 
 static const struct pci_device_id thunderx_spi_pci_id_table[] = {
-- 
2.52.0