Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To:     u.kleine-koenig@pengutronix.de, linux-kernel@vger.kernel.org,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc:     f.fainelli@gmail.com, linux-pwm@vger.kernel.org,
        bcm-kernel-feedback-list@broadcom.com,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        wahrenst@gmx.net, linux-input@vger.kernel.org,
        dmitry.torokhov@gmail.com, gregkh@linuxfoundation.org,
        devel@driverdev.osuosl.org, p.zabel@pengutronix.de,
        linux-gpio@vger.kernel.org, linux-clk@vger.kernel.org,
        sboyd@kernel.org, linux-rpi-kernel@lists.infradead.org,
        Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: [PATCH v2 03/10] gpio: raspberrypi-exp: Release firmware handle on unbind
Date:   Thu, 22 Oct 2020 17:58:50 +0200
Message-Id: <20201022155858.20867-4-nsaenzjulienne@suse.de>
In-Reply-To: <20201022155858.20867-1-nsaenzjulienne@suse.de>
References: <20201022155858.20867-1-nsaenzjulienne@suse.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Upon unbinding the device make sure we release RPi's firmware interface.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpio/gpio-raspberrypi-exp.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-raspberrypi-exp.c b/drivers/gpio/gpio-raspberrypi-exp.c
index bb100e0124e6..c008336e1131 100644
--- a/drivers/gpio/gpio-raspberrypi-exp.c
+++ b/drivers/gpio/gpio-raspberrypi-exp.c
@@ -231,8 +231,19 @@ static int rpi_exp_gpio_probe(struct platform_device *pdev)
 	rpi_gpio->gc.get = rpi_exp_gpio_get;
 	rpi_gpio->gc.set = rpi_exp_gpio_set;
 	rpi_gpio->gc.can_sleep = true;
+	platform_set_drvdata(pdev, rpi_gpio);
 
-	return devm_gpiochip_add_data(dev, &rpi_gpio->gc, rpi_gpio);
+	return gpiochip_add_data(&rpi_gpio->gc, rpi_gpio);
+}
+
+static int rpi_exp_gpio_remove(struct platform_device *pdev)
+{
+	struct rpi_exp_gpio *rpi_gpio = platform_get_drvdata(pdev);
+
+	gpiochip_remove(&rpi_gpio->gc);
+	rpi_firmware_put(rpi_gpio->fw);
+
+	return 0;
 }
 
 static const struct of_device_id rpi_exp_gpio_ids[] = {
@@ -247,6 +258,7 @@ static struct platform_driver rpi_exp_gpio_driver = {
 		.of_match_table	= of_match_ptr(rpi_exp_gpio_ids),
 	},
 	.probe	= rpi_exp_gpio_probe,
+	.remove = rpi_exp_gpio_remove,
 };
 module_platform_driver(rpi_exp_gpio_driver);
 
-- 
2.28.0