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From: "Ricardo B. Marliere" <ricardo@marliere.net>
Date: Wed, 14 Feb 2024 16:28:28 -0300
Subject: [PATCH 1/2] ALSA: aoa: make soundbus_bus_type const
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Message-Id: <20240214-bus_cleanup-alsa-v1-1-8fedbb4afa94@marliere.net>
References: <20240214-bus_cleanup-alsa-v1-0-8fedbb4afa94@marliere.net>
In-Reply-To: <20240214-bus_cleanup-alsa-v1-0-8fedbb4afa94@marliere.net>
To: Johannes Berg <johannes@sipsolutions.net>, 
 Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Cc: linuxppc-dev@lists.ozlabs.org, alsa-devel@alsa-project.org, 
 linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@marliere.net>

Since commit d492cc2573a0 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the soundbus_bus_type variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 sound/aoa/soundbus/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/aoa/soundbus/core.c b/sound/aoa/soundbus/core.c
index 8f24a3eea16b..2a295f610594 100644
--- a/sound/aoa/soundbus/core.c
+++ b/sound/aoa/soundbus/core.c
@@ -127,7 +127,7 @@ static void soundbus_device_shutdown(struct device *dev)
 
 /* soundbus_dev_attrs is declared in sysfs.c */
 ATTRIBUTE_GROUPS(soundbus_dev);
-static struct bus_type soundbus_bus_type = {
+static const struct bus_type soundbus_bus_type = {
 	.name		= "aoa-soundbus",
 	.probe		= soundbus_probe,
 	.uevent		= soundbus_uevent,

-- 
2.43.0