From: Chen-Yu Tsai wenst@chromium.org
[ Upstream commit 98e47570ba985f2310586c80409238200fa3170f ]
In commit e9153311491d ("regulator: vctrl-regulator: Avoid deadlock getting and setting the voltage"), all calls to get/set the voltage of the control regulator were switched to unlocked versions to avoid deadlocks. However, the call in the probe path is done without regulator locks held. In this case the locked version should be used.
Switch back to the locked regulator_get_voltage() in the probe path to avoid any mishaps.
Fixes: e9153311491d ("regulator: vctrl-regulator: Avoid deadlock getting and setting the voltage") Signed-off-by: Chen-Yu Tsai wenst@chromium.org Link: https://lore.kernel.org/r/20210825033704.3307263-2-wenst@chromium.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/regulator/vctrl-regulator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/regulator/vctrl-regulator.c b/drivers/regulator/vctrl-regulator.c index cbadb1c99679..93d33201ffe0 100644 --- a/drivers/regulator/vctrl-regulator.c +++ b/drivers/regulator/vctrl-regulator.c @@ -490,7 +490,8 @@ static int vctrl_probe(struct platform_device *pdev) if (ret) return ret;
- ctrl_uV = regulator_get_voltage_rdev(vctrl->ctrl_reg->rdev); + /* Use locked consumer API when not in regulator framework */ + ctrl_uV = regulator_get_voltage(vctrl->ctrl_reg); if (ctrl_uV < 0) { dev_err(&pdev->dev, "failed to get control voltage\n"); return ctrl_uV;