diff options
Diffstat (limited to 'sound/usb/stream.c')
| -rw-r--r-- | sound/usb/stream.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index e852c7fd6109..963d425004f8 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -28,6 +28,14 @@ #include "power.h" #include "media.h" +static void audioformat_free(struct audioformat *fp) +{ + list_del(&fp->list); /* unlink for avoiding double-free */ + kfree(fp->rate_table); + kfree(fp->chmap); + kfree(fp); +} + /* * free a substream */ @@ -37,11 +45,8 @@ static void free_substream(struct snd_usb_substream *subs) if (!subs->num_formats) return; /* not initialized */ - list_for_each_entry_safe(fp, n, &subs->fmt_list, list) { - kfree(fp->rate_table); - kfree(fp->chmap); - kfree(fp); - } + list_for_each_entry_safe(fp, n, &subs->fmt_list, list) + audioformat_free(fp); kfree(subs->rate_list.list); kfree(subs->str_pd); snd_media_stream_delete(subs); @@ -832,8 +837,7 @@ found_clock: /* ok, let's parse further... */ if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream) < 0) { - kfree(fp->rate_table); - kfree(fp); + audioformat_free(fp); return NULL; } @@ -1043,9 +1047,7 @@ found_clock: pd = kzalloc(sizeof(*pd), GFP_KERNEL); if (!pd) { - kfree(fp->chmap); - kfree(fp->rate_table); - kfree(fp); + audioformat_free(fp); return NULL; } pd->pd_id = (stream == SNDRV_PCM_STREAM_PLAYBACK) ? @@ -1064,9 +1066,7 @@ found_clock: /* ok, let's parse further... */ if (snd_usb_parse_audio_format_v3(chip, fp, as, stream) < 0) { kfree(pd); - kfree(fp->chmap); - kfree(fp->rate_table); - kfree(fp); + audioformat_free(fp); return NULL; } } @@ -1185,11 +1185,8 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) err = snd_usb_add_audio_stream(chip, stream, fp); if (err < 0) { - list_del(&fp->list); /* unlink for avoiding double-free */ + audioformat_free(fp); kfree(pd); - kfree(fp->rate_table); - kfree(fp->chmap); - kfree(fp); return err; } /* try to set the interface... */ |