Commit 5e93a125 authored by Takashi Iwai's avatar Takashi Iwai

ALSA: hda - Fix incorrect clearance of thinkpad_acpi hooks

Since the commit c647f806 ("ALSA: hda - Allow multiple ADCs for
mic mute LED controls") we allow enabling the mic mute LED with
multiple ADCs.  The commit changed the function return value to be
zero or a negative error, while this change was overlooked in the
thinkpad_acpi helper code where it still expects a positive return
value for success.  This eventually leads to a NULL dereference on a
system that has only a mic mute LED.

This patch corrects the return value check in the corresponding code
as well.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201621
Fixes: c647f806 ("ALSA: hda - Allow multiple ADCs for mic mute LED controls")
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent fc09ab7a
......@@ -58,8 +58,8 @@ static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
removefunc = false;
}
if (led_set_func(TPACPI_LED_MICMUTE, false) >= 0 &&
snd_hda_gen_add_micmute_led(codec,
update_tpacpi_micmute) > 0)
!snd_hda_gen_add_micmute_led(codec,
update_tpacpi_micmute))
removefunc = false;
}
......
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