[PATCH v3 14/15] pinctrl: renesas: pinctrl-rzg2l: Acquire lock in rzg2l_pinctrl_pm_setup_pfc()

[Prabhakar <prabhakar.csengg@xxxxxxxxx>]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

To keep consistency with rzg2l_pinctrl_set_pfc_mode(), acquire the lock
in rzg2l_pinctrl_pm_setup_pfc() during PFC setup.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
v2->v3
- New patch
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 1cbf97d416bf..2be088bbbd9f 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -2541,7 +2541,9 @@ static void rzg2l_pinctrl_pm_setup_dedicated_regs(struct rzg2l_pinctrl *pctrl, b
 static void rzg2l_pinctrl_pm_setup_pfc(struct rzg2l_pinctrl *pctrl)
 {
 	u32 nports = pctrl->data->n_port_pins / RZG2L_PINS_PER_PORT;
+	unsigned long flags;
 
+	spin_lock_irqsave(&pctrl->lock, flags);
 	pctrl->data->pwpr_pfc_lock_unlock(pctrl, false);
 
 	/* Restore port registers. */
@@ -2586,6 +2588,7 @@ static void rzg2l_pinctrl_pm_setup_pfc(struct rzg2l_pinctrl *pctrl)
 	}
 
 	pctrl->data->pwpr_pfc_lock_unlock(pctrl, true);
+	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
 
 static int rzg2l_pinctrl_suspend_noirq(struct device *dev)
-- 
2.34.1