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![Takashi Iwai](/assets/img/avatar_default.png)
commit 549f8ffc7b
upstream.
The LED class devices that are created by HD-audio codec drivers are
registered via devm_led_classdev_register() and associated with the
HD-audio codec device. Unfortunately, it turned out that the devres
release doesn't work for this case; namely, since the codec resource
release happens before the devm call chain, it triggers a NULL
dereference or a UAF for a stale set_brightness_delay callback.
For fixing the bug, this patch changes the LED class device register
and unregister in a manual manner without devres, keeping the
instances in hda_gen_spec.
Reported-by: Alexander Sergeyev <sergeev917@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220111195229.a77wrpjclqwrx4bx@localhost.localdomain
Link: https://lore.kernel.org/r/20220126145011.16728-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
368 lines
12 KiB
C
368 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Generic BIOS auto-parser helper functions for HD-audio
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*
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* Copyright (c) 2012 Takashi Iwai <tiwai@suse.de>
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*/
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#ifndef __SOUND_HDA_GENERIC_H
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#define __SOUND_HDA_GENERIC_H
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#include <linux/leds.h>
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/* table entry for multi-io paths */
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struct hda_multi_io {
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hda_nid_t pin; /* multi-io widget pin NID */
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hda_nid_t dac; /* DAC to be connected */
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unsigned int ctl_in; /* cached input-pin control value */
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};
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/* Widget connection path
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*
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* For output, stored in the order of DAC -> ... -> pin,
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* for input, pin -> ... -> ADC.
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*
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* idx[i] contains the source index number to select on of the widget path[i];
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* e.g. idx[1] is the index of the DAC (path[0]) selected by path[1] widget
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* multi[] indicates whether it's a selector widget with multi-connectors
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* (i.e. the connection selection is mandatory)
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* vol_ctl and mute_ctl contains the NIDs for the assigned mixers
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*/
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#define MAX_NID_PATH_DEPTH 10
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enum {
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NID_PATH_VOL_CTL,
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NID_PATH_MUTE_CTL,
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NID_PATH_BOOST_CTL,
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NID_PATH_NUM_CTLS
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};
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struct nid_path {
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int depth;
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hda_nid_t path[MAX_NID_PATH_DEPTH];
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unsigned char idx[MAX_NID_PATH_DEPTH];
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unsigned char multi[MAX_NID_PATH_DEPTH];
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unsigned int ctls[NID_PATH_NUM_CTLS]; /* NID_PATH_XXX_CTL */
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bool active:1; /* activated by driver */
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bool pin_enabled:1; /* pins are enabled */
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bool pin_fixed:1; /* path with fixed pin */
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bool stream_enabled:1; /* stream is active */
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};
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/* mic/line-in auto switching entry */
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#define MAX_AUTO_MIC_PINS 3
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struct automic_entry {
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hda_nid_t pin; /* pin */
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int idx; /* imux index, -1 = invalid */
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unsigned int attr; /* pin attribute (INPUT_PIN_ATTR_*) */
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};
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/* active stream id */
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enum { STREAM_MULTI_OUT, STREAM_INDEP_HP };
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/* PCM hook action */
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enum {
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HDA_GEN_PCM_ACT_OPEN,
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HDA_GEN_PCM_ACT_PREPARE,
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HDA_GEN_PCM_ACT_CLEANUP,
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HDA_GEN_PCM_ACT_CLOSE,
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};
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/* DAC assignment badness table */
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struct badness_table {
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int no_primary_dac; /* no primary DAC */
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int no_dac; /* no secondary DACs */
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int shared_primary; /* primary DAC is shared with main output */
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int shared_surr; /* secondary DAC shared with main or primary */
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int shared_clfe; /* third DAC shared with main or primary */
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int shared_surr_main; /* secondary DAC sahred with main/DAC0 */
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};
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extern const struct badness_table hda_main_out_badness;
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extern const struct badness_table hda_extra_out_badness;
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struct hda_micmute_hook {
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unsigned int led_mode;
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unsigned int capture;
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unsigned int led_value;
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void (*old_hook)(struct hda_codec *codec,
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struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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};
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struct hda_gen_spec {
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char stream_name_analog[32]; /* analog PCM stream */
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const struct hda_pcm_stream *stream_analog_playback;
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const struct hda_pcm_stream *stream_analog_capture;
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char stream_name_alt_analog[32]; /* alternative analog PCM stream */
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const struct hda_pcm_stream *stream_analog_alt_playback;
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const struct hda_pcm_stream *stream_analog_alt_capture;
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char stream_name_digital[32]; /* digital PCM stream */
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const struct hda_pcm_stream *stream_digital_playback;
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const struct hda_pcm_stream *stream_digital_capture;
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/* PCM */
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unsigned int active_streams;
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struct mutex pcm_mutex;
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/* playback */
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struct hda_multi_out multiout; /* playback set-up
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* max_channels, dacs must be set
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* dig_out_nid and hp_nid are optional
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*/
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hda_nid_t alt_dac_nid;
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hda_nid_t follower_dig_outs[3]; /* optional - for auto-parsing */
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int dig_out_type;
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/* capture */
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unsigned int num_adc_nids;
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hda_nid_t adc_nids[AUTO_CFG_MAX_INS];
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hda_nid_t dig_in_nid; /* digital-in NID; optional */
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hda_nid_t mixer_nid; /* analog-mixer NID */
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hda_nid_t mixer_merge_nid; /* aamix merge-point NID (optional) */
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const char *input_labels[HDA_MAX_NUM_INPUTS];
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int input_label_idxs[HDA_MAX_NUM_INPUTS];
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/* capture setup for dynamic dual-adc switch */
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hda_nid_t cur_adc;
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unsigned int cur_adc_stream_tag;
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unsigned int cur_adc_format;
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/* capture source */
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struct hda_input_mux input_mux;
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unsigned int cur_mux[3];
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/* channel model */
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/* min_channel_count contains the minimum channel count for primary
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* outputs. When multi_ios is set, the channels can be configured
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* between min_channel_count and (min_channel_count + multi_ios * 2).
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*
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* ext_channel_count contains the current channel count of the primary
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* out. This varies in the range above.
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*
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* Meanwhile, const_channel_count is the channel count for all outputs
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* including headphone and speakers. It's a constant value, and the
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* PCM is set up as max(ext_channel_count, const_channel_count).
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*/
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int min_channel_count; /* min. channel count for primary out */
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int ext_channel_count; /* current channel count for primary */
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int const_channel_count; /* channel count for all */
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/* PCM information */
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struct hda_pcm *pcm_rec[3]; /* used in build_pcms() */
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/* dynamic controls, init_verbs and input_mux */
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struct auto_pin_cfg autocfg;
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struct snd_array kctls;
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hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
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hda_nid_t imux_pins[HDA_MAX_NUM_INPUTS];
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unsigned int dyn_adc_idx[HDA_MAX_NUM_INPUTS];
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/* shared hp/mic */
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hda_nid_t shared_mic_vref_pin;
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hda_nid_t hp_mic_pin;
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int hp_mic_mux_idx;
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/* DAC/ADC lists */
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int num_all_dacs;
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hda_nid_t all_dacs[16];
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int num_all_adcs;
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hda_nid_t all_adcs[AUTO_CFG_MAX_INS];
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/* path list */
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struct snd_array paths;
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/* path indices */
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int out_paths[AUTO_CFG_MAX_OUTS];
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int hp_paths[AUTO_CFG_MAX_OUTS];
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int speaker_paths[AUTO_CFG_MAX_OUTS];
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int aamix_out_paths[3];
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int digout_paths[AUTO_CFG_MAX_OUTS];
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int input_paths[HDA_MAX_NUM_INPUTS][AUTO_CFG_MAX_INS];
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int loopback_paths[HDA_MAX_NUM_INPUTS];
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int loopback_merge_path;
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int digin_path;
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/* auto-mic stuff */
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int am_num_entries;
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struct automic_entry am_entry[MAX_AUTO_MIC_PINS];
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/* for pin sensing */
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/* current status; set in hda_geneic.c */
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unsigned int hp_jack_present:1;
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unsigned int line_jack_present:1;
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unsigned int speaker_muted:1; /* current status of speaker mute */
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unsigned int line_out_muted:1; /* current status of LO mute */
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/* internal states of automute / autoswitch behavior */
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unsigned int auto_mic:1;
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unsigned int automute_speaker:1; /* automute speaker outputs */
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unsigned int automute_lo:1; /* automute LO outputs */
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/* capabilities detected by parser */
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unsigned int detect_hp:1; /* Headphone detection enabled */
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unsigned int detect_lo:1; /* Line-out detection enabled */
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unsigned int automute_speaker_possible:1; /* there are speakers and either LO or HP */
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unsigned int automute_lo_possible:1; /* there are line outs and HP */
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/* additional parameters set by codec drivers */
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unsigned int master_mute:1; /* master mute over all */
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unsigned int keep_vref_in_automute:1; /* Don't clear VREF in automute */
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unsigned int line_in_auto_switch:1; /* allow line-in auto switch */
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unsigned int auto_mute_via_amp:1; /* auto-mute via amp instead of pinctl */
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/* parser behavior flags; set before snd_hda_gen_parse_auto_config() */
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unsigned int suppress_auto_mute:1; /* suppress input jack auto mute */
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unsigned int suppress_auto_mic:1; /* suppress input jack auto switch */
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/* other parse behavior flags */
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unsigned int need_dac_fix:1; /* need to limit DACs for multi channels */
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unsigned int hp_mic:1; /* Allow HP as a mic-in */
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unsigned int suppress_hp_mic_detect:1; /* Don't detect HP/mic */
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unsigned int no_primary_hp:1; /* Don't prefer HP pins to speaker pins */
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unsigned int no_multi_io:1; /* Don't try multi I/O config */
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unsigned int multi_cap_vol:1; /* allow multiple capture xxx volumes */
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unsigned int inv_dmic_split:1; /* inverted dmic w/a for conexant */
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unsigned int own_eapd_ctl:1; /* set EAPD by own function */
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unsigned int keep_eapd_on:1; /* don't turn off EAPD automatically */
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unsigned int vmaster_mute_enum:1; /* add vmaster mute mode enum */
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unsigned int indep_hp:1; /* independent HP supported */
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unsigned int prefer_hp_amp:1; /* enable HP amp for speaker if any */
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unsigned int add_stereo_mix_input:2; /* add aamix as a capture src */
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unsigned int add_jack_modes:1; /* add i/o jack mode enum ctls */
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unsigned int power_down_unused:1; /* power down unused widgets */
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unsigned int dac_min_mute:1; /* minimal = mute for DACs */
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unsigned int suppress_vmaster:1; /* don't create vmaster kctls */
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unsigned int obey_preferred_dacs:1; /* obey preferred_dacs assignment */
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/* other internal flags */
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unsigned int no_analog:1; /* digital I/O only */
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unsigned int dyn_adc_switch:1; /* switch ADCs (for ALC275) */
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unsigned int indep_hp_enabled:1; /* independent HP enabled */
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unsigned int have_aamix_ctl:1;
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unsigned int hp_mic_jack_modes:1;
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unsigned int skip_verbs:1; /* don't apply verbs at snd_hda_gen_init() */
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/* additional mute flags (only effective with auto_mute_via_amp=1) */
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u64 mute_bits;
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/* bitmask for skipping volume controls */
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u64 out_vol_mask;
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/* badness tables for output path evaluations */
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const struct badness_table *main_out_badness;
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const struct badness_table *extra_out_badness;
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/* preferred pin/DAC pairs; an array of paired NIDs */
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const hda_nid_t *preferred_dacs;
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/* loopback mixing mode */
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bool aamix_mode;
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/* digital beep */
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hda_nid_t beep_nid;
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/* for virtual master */
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hda_nid_t vmaster_nid;
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unsigned int vmaster_tlv[4];
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struct hda_vmaster_mute_hook vmaster_mute;
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struct hda_loopback_check loopback;
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struct snd_array loopback_list;
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/* multi-io */
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int multi_ios;
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struct hda_multi_io multi_io[4];
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/* hooks */
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void (*init_hook)(struct hda_codec *codec);
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void (*automute_hook)(struct hda_codec *codec);
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void (*cap_sync_hook)(struct hda_codec *codec,
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struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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/* mic mute LED hook; called via cap_sync_hook */
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struct hda_micmute_hook micmute_led;
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/* PCM hooks */
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void (*pcm_playback_hook)(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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struct snd_pcm_substream *substream,
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int action);
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void (*pcm_capture_hook)(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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struct snd_pcm_substream *substream,
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int action);
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/* automute / autoswitch hooks */
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void (*hp_automute_hook)(struct hda_codec *codec,
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struct hda_jack_callback *cb);
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void (*line_automute_hook)(struct hda_codec *codec,
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struct hda_jack_callback *cb);
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void (*mic_autoswitch_hook)(struct hda_codec *codec,
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struct hda_jack_callback *cb);
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/* leds */
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struct led_classdev *led_cdevs[NUM_AUDIO_LEDS];
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};
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/* values for add_stereo_mix_input flag */
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enum {
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HDA_HINT_STEREO_MIX_DISABLE, /* No stereo mix input */
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HDA_HINT_STEREO_MIX_ENABLE, /* Add stereo mix input */
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HDA_HINT_STEREO_MIX_AUTO, /* Add only if auto-mic is disabled */
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};
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int snd_hda_gen_spec_init(struct hda_gen_spec *spec);
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int snd_hda_gen_init(struct hda_codec *codec);
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void snd_hda_gen_free(struct hda_codec *codec);
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int snd_hda_get_path_idx(struct hda_codec *codec, struct nid_path *path);
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struct nid_path *snd_hda_get_path_from_idx(struct hda_codec *codec, int idx);
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struct nid_path *
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snd_hda_add_new_path(struct hda_codec *codec, hda_nid_t from_nid,
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hda_nid_t to_nid, int anchor_nid);
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void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
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bool enable, bool add_aamix);
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struct snd_kcontrol_new *
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snd_hda_gen_add_kctl(struct hda_gen_spec *spec, const char *name,
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const struct snd_kcontrol_new *temp);
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int snd_hda_gen_parse_auto_config(struct hda_codec *codec,
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struct auto_pin_cfg *cfg);
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int snd_hda_gen_build_controls(struct hda_codec *codec);
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int snd_hda_gen_build_pcms(struct hda_codec *codec);
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void snd_hda_gen_reboot_notify(struct hda_codec *codec);
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/* standard jack event callbacks */
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void snd_hda_gen_hp_automute(struct hda_codec *codec,
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struct hda_jack_callback *jack);
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void snd_hda_gen_line_automute(struct hda_codec *codec,
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struct hda_jack_callback *jack);
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void snd_hda_gen_mic_autoswitch(struct hda_codec *codec,
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struct hda_jack_callback *jack);
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void snd_hda_gen_update_outputs(struct hda_codec *codec);
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#ifdef CONFIG_PM
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int snd_hda_gen_check_power_status(struct hda_codec *codec, hda_nid_t nid);
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#endif
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unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec,
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hda_nid_t nid,
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unsigned int power_state);
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void snd_hda_gen_stream_pm(struct hda_codec *codec, hda_nid_t nid, bool on);
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int snd_hda_gen_fix_pin_power(struct hda_codec *codec, hda_nid_t pin);
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int snd_hda_gen_add_mute_led_cdev(struct hda_codec *codec,
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int (*callback)(struct led_classdev *,
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enum led_brightness));
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int snd_hda_gen_add_micmute_led_cdev(struct hda_codec *codec,
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int (*callback)(struct led_classdev *,
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enum led_brightness));
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#endif /* __SOUND_HDA_GENERIC_H */
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