linux-kernel - [PATCH V5] regulator: da9062: Make the use of IRQ optional

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Date:   Thu, 13 Jul 2023 11:03:28 +0200
From:   Christoph Niedermaier <cniedermaier@...electronics.com>
To:     <linux-arm-kernel@...ts.infradead.org>
CC:     Christoph Niedermaier <cniedermaier@...electronics.com>,
        "Support Opensource" <support.opensource@...semi.com>,
        Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Marek Vasut <marex@...x.de>,
        <kernel@...electronics.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH V5] regulator: da9062: Make the use of IRQ optional

This patch makes the use of IRQ optional to make the DA9061/62 usable
for designs that don't have the IRQ pin connected, because the regulator
is usable without IRQ.

Signed-off-by: Christoph Niedermaier <cniedermaier@...electronics.com>
Acked-by: Mark Brown <broonie@...nel.org>
Reviewed-by: Adam Ward <DLG-Adam.Ward.opensource@...renesas.com>
Reviewed-by: Marek Vasut <marex@...x.de>
Reported-by: kernel test robot <lkp@...el.com>
Link: https://lore.kernel.org/oe-kbuild-all/202303082246.GuLdPL0t-lkp@intel.com/
---
Cc: Support Opensource <support.opensource@...semi.com>
Cc: Adam Thomson <Adam.Thomson.Opensource@...semi.com>
Cc: Liam Girdwood <lgirdwood@...il.com>
Cc: Mark Brown <broonie@...nel.org>
Cc: Marek Vasut <marex@...x.de>
Cc: kernel@...electronics.com
Cc: linux-kernel@...r.kernel.org
To: linux-arm-kernel@...ts.infradead.org
---
V2: - Rebase on current next 20230209
    - Add Reviewed-by and Acked-by tags
V3: - Rebase on current next 20230307
v4: - Rebase on current next 20230309
    - Fix a missing variable change reported by kernel test robot
v5: - Rebase on current next 20230713
    - Add Marek's Reviewed-by tag
---
 drivers/regulator/da9062-regulator.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c
index c28b061eef02..1d354db0c1bd 100644
--- a/drivers/regulator/da9062-regulator.c
+++ b/drivers/regulator/da9062-regulator.c
@@ -924,7 +924,7 @@ static int da9062_regulator_probe(struct platform_device *pdev)
 	struct da9062_regulator *regl;
 	struct regulator_config config = { };
 	const struct da9062_regulator_info *rinfo;
-	int irq, n, ret;
+	int n, ret;
 	int max_regulators;
 
 	switch (chip->chip_type) {
@@ -1012,12 +1012,11 @@ static int da9062_regulator_probe(struct platform_device *pdev)
 	}
 
 	/* LDOs overcurrent event support */
-	irq = platform_get_irq_byname(pdev, "LDO_LIM");
-	if (irq < 0)
-		return irq;
-	regulators->irq_ldo_lim = irq;
+	regulators->irq_ldo_lim = platform_get_irq_byname_optional(pdev, "LDO_LIM");
+	if (regulators->irq_ldo_lim < 0)
+		return 0;
 
-	ret = devm_request_threaded_irq(&pdev->dev, irq,
+	ret = devm_request_threaded_irq(&pdev->dev, regulators->irq_ldo_lim,
 					NULL, da9062_ldo_lim_event,
 					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 					"LDO_LIM", regulators);
-- 
2.11.0