[PATCH v4 1/4] firmware: coreboot: Generate modalias uevent for devices

From: "Nícolas F. R. A. Prado" <nfraprado@collabora.com>
To: Tzung-Bi Shih <tzungbi@kernel.org>
Cc: "Arnd Bergmann" <arnd@arndb.de>,
	"Brian Norris" <briannorris@chromium.org>,
	"Julius Werner" <jwerner@chromium.org>,
	"Masahiro Yamada" <masahiroy@kernel.org>,
	"Nathan Chancellor" <nathan@kernel.org>,
	"Nicolas Schier" <nicolas@fjasle.eu>,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	"Will Deacon" <will@kernel.org>,
	"AngeloGioacchino Del Regno"
	<angelogioacchino.delregno@collabora.com>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	kernel@collabora.com, chrome-platform@lists.linux.dev,
	linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	"Nícolas F. R. A. Prado" <nfraprado@collabora.com>
Subject: [PATCH v4 1/4] firmware: coreboot: Generate modalias uevent for devices
Date: Mon, 12 Feb 2024 09:50:05 -0500	[thread overview]
Message-ID: <20240212-coreboot-mod-defconfig-v4-1-d14172676f6d@collabora.com> (raw)
In-Reply-To: <20240212-coreboot-mod-defconfig-v4-0-d14172676f6d@collabora.com>

Generate a modalias uevent for devices in the coreboot bus to allow
userspace to automatically load the corresponding modules.

Acked-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
---
 drivers/firmware/google/coreboot_table.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/firmware/google/coreboot_table.c b/drivers/firmware/google/coreboot_table.c
index 2a4469bf1b81..c1b9a9e8e8ed 100644
--- a/drivers/firmware/google/coreboot_table.c
+++ b/drivers/firmware/google/coreboot_table.c
@@ -53,11 +53,20 @@ static void coreboot_bus_remove(struct device *dev)
 		driver->remove(device);
 }
 
+static int coreboot_bus_uevent(const struct device *dev, struct kobj_uevent_env *env)
+{
+	struct coreboot_device *device = CB_DEV(dev);
+	u32 tag = device->entry.tag;
+
+	return add_uevent_var(env, "MODALIAS=coreboot:t%08X", tag);
+}
+
 static struct bus_type coreboot_bus_type = {
 	.name		= "coreboot",
 	.match		= coreboot_bus_match,
 	.probe		= coreboot_bus_probe,
 	.remove		= coreboot_bus_remove,
+	.uevent		= coreboot_bus_uevent,
 };
 
 static void coreboot_device_release(struct device *dev)

-- 
2.43.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
