[PATCH v1 4/9] gpiolib: Clear the gpio_device's fwnode initialized flag before adding

From: Saravana Kannan <saravanak@google.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <brgl@bgdev.pl>,
	Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Magnus Damm <magnus.damm@gmail.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Daniel Scally <djrscally@gmail.com>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	Len Brown <lenb@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>,
	Abel Vesa <abel.vesa@linaro.org>,
	Alexander Stein <alexander.stein@ew.tq-group.com>,
	Tony Lindgren <tony@atomide.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	John Stultz <jstultz@google.com>,
	Doug Anderson <dianders@chromium.org>,
	Guenter Roeck <linux@roeck-us.net>,
	kernel-team@android.com, linux-kernel@vger.kernel.org,
	linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: [PATCH v1 4/9] gpiolib: Clear the gpio_device's fwnode initialized flag before adding
Date: Tue,  9 Aug 2022 23:00:33 -0700	[thread overview]
Message-ID: <20220810060040.321697-5-saravanak@google.com> (raw)
In-Reply-To: <20220810060040.321697-1-saravanak@google.com>

Registering an irqdomain sets the flag for the fwnode. But having the
flag set when a device is added is interpreted by fw_devlink to mean the
device has already been initialized and will never probe. This prevents
fw_devlink from creating device links with the gpio_device as a
supplier. So, clear the flag before adding the device.

Signed-off-by: Saravana Kannan <saravanak@google.com>
---
 drivers/gpio/gpiolib.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index cc9c0a12259e..1d57d6f24632 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -522,6 +522,12 @@ static int gpiochip_setup_dev(struct gpio_device *gdev)
 {
 	int ret;
 
+	/*
+	 * If fwnode doesn't belong to another device, it's safe to clear its
+	 * initialized flag.
+	 */
+	if (!gdev->dev.fwnode->dev)
+		fwnode_dev_initialized(gdev->dev.fwnode, false);
 	ret = gcdev_register(gdev, gpio_devt);
 	if (ret)
 		return ret;
-- 
2.37.1.559.g78731f0fdb-goog

