[PATCH] pinctrl: samsung: Fix irq handling if an error occurs in exynos_irq_demux_eint16_31()

From: Christophe JAILLET
Date: Sun Nov 17 2024 - 07:04:11 EST


chained_irq_enter(() should be paired with a corresponding
chained_irq_exit().

Here, if clk_enable() fails, a early return occurs and chained_irq_exit()
is not called.

Add a new label and a goto for fix it.

Fixes: f9c744747973 ("pinctrl: samsung: support a bus clock")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Compile tested only.

Review with care, irq handling is sometimes tricky...
---
drivers/pinctrl/samsung/pinctrl-exynos.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index b79c211c0374..ac6dc22b37c9 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -636,7 +636,7 @@ static void exynos_irq_demux_eint16_31(struct irq_desc *desc)
if (clk_enable(b->drvdata->pclk)) {
dev_err(b->gpio_chip.parent,
"unable to enable clock for pending IRQs\n");
- return;
+ goto out;
}
}

@@ -652,6 +652,7 @@ static void exynos_irq_demux_eint16_31(struct irq_desc *desc)
if (eintd->nr_banks)
clk_disable(eintd->banks[0]->drvdata->pclk);

+out:
chained_irq_exit(chip, desc);
}

--
2.47.0