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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-12-19 14:34:46 +0100
committerTakashi Iwai <tiwai@suse.de>2023-12-30 10:10:41 +0100
commit66e82d219924f6112509f7e8f8e687fcc81a16e3 (patch)
tree1b6b2906f607cd81e85583a94ee6a0e5e4ee44ac /sound/ac97_bus.c
parent64bf8dec54cfe57f416884a6b3d54c7f4259e93f (diff)
ALSA: mark all struct bus_type as const
Now that the driver core can properly handle constant struct bus_type, move all of the sound subsystem struct bus_type structures as const, placing them into read-only memory which can not be modified at runtime. Note, this fixes a duplicate definition of ac97_bus_type, which somehow was declared extern in a .h file, and then static as a prototype in a .c file, and then properly later on in the same .c file. Amazing that no compiler warning ever showed up for this. Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Cc: Dawei Li <set_pte_at@outlook.com> Cc: Yu Liao <liaoyu15@huawei.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: linux-sound@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/2023121945-immersion-budget-d0aa@gregkh Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/ac97_bus.c')
-rw-r--r--sound/ac97_bus.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c
index c7aee8c42c55..7ea274c55900 100644
--- a/sound/ac97_bus.c
+++ b/sound/ac97_bus.c
@@ -75,7 +75,7 @@ int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
}
EXPORT_SYMBOL_GPL(snd_ac97_reset);
-struct bus_type ac97_bus_type = {
+const struct bus_type ac97_bus_type = {
.name = "ac97",
};