From f8702f9e4aa7b45131af3df5531d6e3835269141 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Mon, 19 Nov 2018 00:56:17 +0300 Subject: regulator: core: Use ww_mutex for regulators locking Wait/wound mutex shall be used in order to avoid lockups on locking of coupled regulators. Signed-off-by: Dmitry Osipenko Suggested-by: Lucas Stach Signed-off-by: Mark Brown --- drivers/regulator/wm8350-regulator.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/regulator/wm8350-regulator.c') diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c index 8ad11b074b49..a1c7dfee5c37 100644 --- a/drivers/regulator/wm8350-regulator.c +++ b/drivers/regulator/wm8350-regulator.c @@ -1153,7 +1153,7 @@ static irqreturn_t pmic_uv_handler(int irq, void *data) { struct regulator_dev *rdev = (struct regulator_dev *)data; - mutex_lock(&rdev->mutex); + regulator_lock(rdev); if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2) regulator_notifier_call_chain(rdev, REGULATOR_EVENT_REGULATION_OUT, @@ -1162,7 +1162,7 @@ static irqreturn_t pmic_uv_handler(int irq, void *data) regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - mutex_unlock(&rdev->mutex); + regulator_unlock(rdev); return IRQ_HANDLED; } -- cgit v1.2.3