diff options
Diffstat (limited to 'sound/pci/ac97/ac97_codec.c')
| -rw-r--r-- | sound/pci/ac97/ac97_codec.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c index ceead55f13ab..ff685321f1a1 100644 --- a/sound/pci/ac97/ac97_codec.c +++ b/sound/pci/ac97/ac97_codec.c @@ -2656,11 +2656,18 @@ EXPORT_SYMBOL(snd_ac97_resume); */ static void set_ctl_name(char *dst, const char *src, const char *suffix) { - if (suffix) - sprintf(dst, "%s %s", src, suffix); - else - strcpy(dst, src); -} + const size_t msize = SNDRV_CTL_ELEM_ID_NAME_MAXLEN; + + if (suffix) { + if (snprintf(dst, msize, "%s %s", src, suffix) >= msize) + pr_warn("ALSA: AC97 control name '%s %s' truncated to '%s'\n", + src, suffix, dst); + } else { + if (strscpy(dst, src, msize) < 0) + pr_warn("ALSA: AC97 control name '%s' truncated to '%s'\n", + src, dst); + } +} /* remove the control with the given name and optional suffix */ static int snd_ac97_remove_ctl(struct snd_ac97 *ac97, const char *name, @@ -2687,8 +2694,11 @@ static int snd_ac97_rename_ctl(struct snd_ac97 *ac97, const char *src, const char *dst, const char *suffix) { struct snd_kcontrol *kctl = ctl_find(ac97, src, suffix); + char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; + if (kctl) { - set_ctl_name(kctl->id.name, dst, suffix); + set_ctl_name(name, dst, suffix); + snd_ctl_rename(ac97->bus->card, kctl, name); return 0; } return -ENOENT; @@ -2707,11 +2717,17 @@ static int snd_ac97_swap_ctl(struct snd_ac97 *ac97, const char *s1, const char *s2, const char *suffix) { struct snd_kcontrol *kctl1, *kctl2; + char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; + kctl1 = ctl_find(ac97, s1, suffix); kctl2 = ctl_find(ac97, s2, suffix); if (kctl1 && kctl2) { - set_ctl_name(kctl1->id.name, s2, suffix); - set_ctl_name(kctl2->id.name, s1, suffix); + set_ctl_name(name, s2, suffix); + snd_ctl_rename(ac97->bus->card, kctl1, name); + + set_ctl_name(name, s1, suffix); + snd_ctl_rename(ac97->bus->card, kctl2, name); + return 0; } return -ENOENT; |