linux-kernel - [PATCH v4 08/11] input: raspberrypi-ts: Release firmware handle when not needed

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Date:   Thu, 12 Nov 2020 17:36:26 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     u.kleine-koenig@...gutronix.de, linux-kernel@...r.kernel.org
Cc:     f.fainelli@...il.com, linux-pwm@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        wahrenst@....net, linux-input@...r.kernel.org,
        dmitry.torokhov@...il.com, gregkh@...uxfoundation.org,
        devel@...verdev.osuosl.org, p.zabel@...gutronix.de,
        linux-gpio@...r.kernel.org, linus.walleij@...aro.org,
        linux-clk@...r.kernel.org, sboyd@...nel.org,
        linux-rpi-kernel@...ts.infradead.org, bgolaszewski@...libre.com,
        andy.shevchenko@...il.com,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Subject: [PATCH v4 08/11] input: raspberrypi-ts: Release firmware handle when not needed

Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---

Changes since v3:
 - Release firmware handle in probe function

Changes since v2:
 - Use devm_rpi_firmware_get(), instead of remove function

 drivers/input/touchscreen/raspberrypi-ts.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/raspberrypi-ts.c b/drivers/input/touchscreen/raspberrypi-ts.c
index ef6aaed217cf..5000f5fd9ec3 100644
--- a/drivers/input/touchscreen/raspberrypi-ts.c
+++ b/drivers/input/touchscreen/raspberrypi-ts.c
@@ -160,7 +160,7 @@ static int rpi_ts_probe(struct platform_device *pdev)
 	touchbuf = (u32)ts->fw_regs_phys;
 	error = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF,
 				      &touchbuf, sizeof(touchbuf));
-
+	rpi_firmware_put(fw);
 	if (error || touchbuf != 0) {
 		dev_warn(dev, "Failed to set touchbuf, %d\n", error);
 		return error;
-- 
2.29.2