3.2.100-rc1 review patch. If anyone has any objections, please let me know.
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From: Jaejoong Kim climbbb.kim@gmail.com
commit 89b89d121ffcf8d9546633b98ded9d18b8f75891 upstream.
snd_usb_copy_string_desc() returns zero if usb_string() fails. In case of failure, we need to check the snd_usb_copy_string_desc()'s return value and add an exception case
Signed-off-by: Jaejoong Kim climbbb.kim@gmail.com Signed-off-by: Takashi Iwai tiwai@suse.de [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1928,12 +1928,14 @@ static int parse_audio_selector_unit(str if (len) ; else if (nameid) - snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); - else { + len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, + sizeof(kctl->id.name)); + else len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 0); - if (! len) - strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); + + if (!len) { + strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) append_ctl_name(kctl, " Clock Source");