Declare snd_kcontrol_new strcutures as const as they are only passed as an argument to the function snd_ctl_new1. This argument is of type const, so snd_kcontrol_new structures having this property can be made const too. Done using Coccinelle:

@r disable optional_qualifier@ identifier x; position p; @@ static struct snd_kcontrol_new x@p={...};

@ok@ identifier r.x; position p; @@ snd_ctl_new1(&x@p,...)

@bad@ position p != {r.p,ok.p}; identifier r.x; @@ x@p

@depends on !bad disable optional_qualifier@ identifier r.x; @@ +const struct snd_kcontrol_new x;

Signed-off-by: Bhumika Goyal bhumirks@gmail.com --- sound/usb/midi.c | 2 +- sound/usb/mixer.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/usb/midi.c b/sound/usb/midi.c index 6e763bc..a35f414 100644 --- a/sound/usb/midi.c +++ b/sound/usb/midi.c @@ -1922,7 +1922,7 @@ static int roland_load_put(struct snd_kcontrol *kcontrol, return changed; }

-static struct snd_kcontrol_new roland_load_ctl = { +static const struct snd_kcontrol_new roland_load_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "MIDI Input Mode", .info = roland_load_info, diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 4703cae..082736c 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1172,7 +1172,7 @@ static struct snd_kcontrol_new usb_feature_unit_ctl = { };

/* the read-only variant */ -static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { +static const struct snd_kcontrol_new usb_feature_unit_ctl_ro = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later manually */ .info = mixer_ctl_feature_info, @@ -1745,7 +1745,7 @@ static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, }

/* alsa control interface for processing/extension unit */ -static struct snd_kcontrol_new mixer_procunit_ctl = { +static const struct snd_kcontrol_new mixer_procunit_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = mixer_ctl_feature_info, @@ -2033,7 +2033,7 @@ static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, }

/* alsa control interface for selector unit */ -static struct snd_kcontrol_new mixer_selectunit_ctl = { +static const struct snd_kcontrol_new mixer_selectunit_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = mixer_ctl_selector_info,