linux-kernel - [PATCH] pwm: bcm2835: Fix NPD in suspend/resume

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Date:   Mon, 13 Nov 2023 08:46:32 -0800
From:   Florian Fainelli <florian.fainelli@...adcom.com>
To:     linux-kernel@...r.kernel.org
Cc:     Florian Fainelli <florian.fainelli@...adcom.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        linux-pwm@...r.kernel.org (open list:PWM SUBSYSTEM),
        linux-rpi-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE)
Subject: [PATCH] pwm: bcm2835: Fix NPD in suspend/resume

When 119a508c4dc9 ("pwm: bcm2835: Add support for suspend/resume") was
sent out on October 11th,, there was still a call to
platform_set_drvdata() which would ensure that the driver private data
structure could be used in bcm2835_pwm_{suspend,resume}.

A cleanup now merged as commit commit 2ce7b7f6704c ("pwm: bcm2835:
Simplify using devm functions") removed that call which would now cause
a NPD in bcm2835_pwm_{suspend,resume} as a consequence.

Fixes: 119a508c4dc9 ("pwm: bcm2835: Add support for suspend/resume")
Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>
---
 drivers/pwm/pwm-bcm2835.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c
index 9777babd5b95..ab30667f4f95 100644
--- a/drivers/pwm/pwm-bcm2835.c
+++ b/drivers/pwm/pwm-bcm2835.c
@@ -155,6 +155,8 @@ static int bcm2835_pwm_probe(struct platform_device *pdev)
 	pc->chip.ops = &bcm2835_pwm_ops;
 	pc->chip.npwm = 2;
 
+	platform_set_drvdata(pdev, pc);
+
 	ret = devm_pwmchip_add(&pdev->dev, &pc->chip);
 	if (ret < 0)
 		return dev_err_probe(&pdev->dev, ret,
-- 
2.34.1