[PATCH 1/1] counter: intel-qep: Use devm_mutex_init()

[Ilpo Järvinen]

intel_qep_probe() calls mutex_init() but lacks the pairing
mutex_destroy() calls. Convert to devm_mutex_init() which handles
cleanup automatically.

Fixes: b711f687a1c1 ("counter: Add support for Intel Quadrature Encoder Peripheral")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
 drivers/counter/intel-qep.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/counter/intel-qep.c b/drivers/counter/intel-qep.c
index c49c178056f4..816586893517 100644
--- a/drivers/counter/intel-qep.c
+++ b/drivers/counter/intel-qep.c
@@ -414,7 +414,9 @@ static int intel_qep_probe(struct pci_dev *pci, const struct pci_device_id *id)
 
 	qep->dev = dev;
 	qep->regs = regs;
-	mutex_init(&qep->lock);
+	ret = devm_mutex_init(dev, &qep->lock);
+	if (ret)
+		return ret;
 
 	intel_qep_init(qep);
 	pci_set_drvdata(pci, qep);

base-commit: 1d5dcaa3bd65f2e8c9baa14a393d3a2dc5db7524
-- 
2.47.3