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| author | Takashi Iwai <tiwai@suse.de> | 2018-11-05 14:28:07 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-11-06 18:33:53 +0300 |
| commit | 5e93a125f521efd00d71af31c2a301f3d46af48c (patch) | |
| tree | 971bed0083a5fc4ed187da0b6db48c4dc2526046 /sound/pci/hda/thinkpad_helper.c | |
| parent | fc09ab7a767394f9ecdad84ea6e85d68b83c8e21 (diff) | |
| download | linux-5e93a125f521efd00d71af31c2a301f3d46af48c.tar.xz | |
ALSA: hda - Fix incorrect clearance of thinkpad_acpi hooks
Since the commit c647f806b8c2 ("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: c647f806b8c2 ("ALSA: hda - Allow multiple ADCs for mic mute LED controls")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/thinkpad_helper.c')
| -rw-r--r-- | sound/pci/hda/thinkpad_helper.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/pci/hda/thinkpad_helper.c b/sound/pci/hda/thinkpad_helper.c index 97f49b751e6e..568575b72f2f 100644 --- a/sound/pci/hda/thinkpad_helper.c +++ b/sound/pci/hda/thinkpad_helper.c @@ -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; } |