From patchwork Tue Dec 19 17:18:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 13498623 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 41F6B31A6E; Tue, 19 Dec 2023 17:19:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="gEDyh+3q" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66050C433C7; Tue, 19 Dec 2023 17:19:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1703006343; bh=oFlModBgHHrw6mw7QX5fJ8iZecR+dIhjZKfdEJupX78=; h=From:To:Cc:Subject:Date:From; b=gEDyh+3qajbt33sxBJRuS2q7Vhi3i6cm4LFQNegsV7joyO44Ap+b5HdAi/NfVWR3T 8knT3xYXfKO0e6RMQYOP3Y3lFw/outxaVb30lV21E3IJrqYqxmFjn3k0vwoS96Qp3W dfnXihFT7lBnkSwsbZRDpFHsB68oU0dFfVOa9zLM= From: Greg Kroah-Hartman To: hdegoede@redhat.com Cc: linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Maximilian Luz , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , platform-driver-x86@vger.kernel.org Subject: [PATCH] platform/surface: aggregator: make ssam_bus_type constant and static Date: Tue, 19 Dec 2023 18:18:58 +0100 Message-ID: <2023121957-tapered-upswing-8326@gregkh> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2207; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=oFlModBgHHrw6mw7QX5fJ8iZecR+dIhjZKfdEJupX78=; b=owGbwMvMwCRo6H6F97bub03G02pJDKmNF5oY5n3gUVu26WbCT7m3t/ezzFvW4HbCtVHVvdwv9 /SkzUfKO2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTGBDuDgFYCJ1sgzzVJZ9XHxYLK7Ui+WB d1N1Z8Cr9UxvGRbMZF0dFpV5NX1pi21Ban+XTZrLcn0A X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Now that the driver core can properly handle constant struct bus_type, move the ssam_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. It's also never used outside of drivers/platform/surface/aggregator/bus.c so make it static and don't export it as no one is using it. Cc: Maximilian Luz Cc: Hans de Goede Cc: "Ilpo Järvinen" Cc: platform-driver-x86@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Reviewed-by: Maximilian Luz --- drivers/platform/surface/aggregator/bus.c | 5 +++-- include/linux/surface_aggregator/device.h | 1 - 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/platform/surface/aggregator/bus.c b/drivers/platform/surface/aggregator/bus.c index 42ccd7f1c9b9..118caa651bec 100644 --- a/drivers/platform/surface/aggregator/bus.c +++ b/drivers/platform/surface/aggregator/bus.c @@ -35,6 +35,8 @@ static struct attribute *ssam_device_attrs[] = { }; ATTRIBUTE_GROUPS(ssam_device); +static const struct bus_type ssam_bus_type; + static int ssam_device_uevent(const struct device *dev, struct kobj_uevent_env *env) { const struct ssam_device *sdev = to_ssam_device(dev); @@ -329,13 +331,12 @@ static void ssam_bus_remove(struct device *dev) sdrv->remove(to_ssam_device(dev)); } -struct bus_type ssam_bus_type = { +static const struct bus_type ssam_bus_type = { .name = "surface_aggregator", .match = ssam_bus_match, .probe = ssam_bus_probe, .remove = ssam_bus_remove, }; -EXPORT_SYMBOL_GPL(ssam_bus_type); /** * __ssam_device_driver_register() - Register a SSAM client device driver. diff --git a/include/linux/surface_aggregator/device.h b/include/linux/surface_aggregator/device.h index 42b249b4c24b..8cd8c38cf3f3 100644 --- a/include/linux/surface_aggregator/device.h +++ b/include/linux/surface_aggregator/device.h @@ -193,7 +193,6 @@ struct ssam_device_driver { #ifdef CONFIG_SURFACE_AGGREGATOR_BUS -extern struct bus_type ssam_bus_type; extern const struct device_type ssam_device_type; /**