linux-kernel - [PATCH 4.19 046/321] pwm: bcm-iproc: Prevent unloading the driver module while in use

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Message-Id: <20191203223429.504337448@linuxfoundation.org>
Date:   Tue,  3 Dec 2019 23:31:52 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 046/321] pwm: bcm-iproc: Prevent unloading the driver module while in use

From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

[ Upstream commit 24906a41eecb73d51974ade0847c21e429beec60 ]

The owner member of struct pwm_ops must be set to THIS_MODULE to
increase the reference count of the module such that the module cannot
be removed while its code is in use.

Fixes: daa5abc41c80 ("pwm: Add support for Broadcom iProc PWM controller")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: Thierry Reding <thierry.reding@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pwm/pwm-bcm-iproc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pwm/pwm-bcm-iproc.c b/drivers/pwm/pwm-bcm-iproc.c
index d961a8207b1cb..31b01035d0ab3 100644
--- a/drivers/pwm/pwm-bcm-iproc.c
+++ b/drivers/pwm/pwm-bcm-iproc.c
@@ -187,6 +187,7 @@ static int iproc_pwmc_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 static const struct pwm_ops iproc_pwm_ops = {
 	.apply = iproc_pwmc_apply,
 	.get_state = iproc_pwmc_get_state,
+	.owner = THIS_MODULE,
 };
 
 static int iproc_pwmc_probe(struct platform_device *pdev)
-- 
2.20.1