linux-kernel - [PATCH] counter: 104-quad-8: Fix incorrect return value in IRQ handler

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Message-ID: <20251202083952.1975-1-vulab@iscas.ac.cn>
Date: Tue,  2 Dec 2025 16:39:52 +0800
From: Haotian Zhang <vulab@...as.ac.cn>
To: wbg@...nel.org
Cc: andriy.shevchenko@...ux.intel.com,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Haotian Zhang <vulab@...as.ac.cn>
Subject: [PATCH] counter: 104-quad-8: Fix incorrect return value in IRQ handler

quad8_irq_handler() should return irqreturn_t enum values, but it
directly returns negative errno codes from regmap operations on error.

Return IRQ_NONE instead of raw errno codes on regmap operation failures.

Fixes: 98ffe0252911 ("counter: 104-quad-8: Migrate to the regmap API")
Signed-off-by: Haotian Zhang <vulab@...as.ac.cn>
---
 drivers/counter/104-quad-8.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/counter/104-quad-8.c b/drivers/counter/104-quad-8.c
index ce81fc4e1ae7..17f4da6c24af 100644
--- a/drivers/counter/104-quad-8.c
+++ b/drivers/counter/104-quad-8.c
@@ -1201,7 +1201,7 @@ static irqreturn_t quad8_irq_handler(int irq, void *private)
 
 	ret = regmap_read(priv->map, QUAD8_INTERRUPT_STATUS, &status);
 	if (ret)
-		return ret;
+		return IRQ_NONE;
 	if (!status)
 		return IRQ_NONE;
 
@@ -1233,7 +1233,7 @@ static irqreturn_t quad8_irq_handler(int irq, void *private)
 
 	ret = regmap_write(priv->map, QUAD8_CHANNEL_OPERATION, CLEAR_PENDING_INTERRUPTS);
 	if (ret)
-		return ret;
+		return IRQ_NONE;
 
 	return IRQ_HANDLED;
 }
-- 
2.50.1.windows.1