From 9bb201a5d5acc733943e8af7151cceab9d976a69 Mon Sep 17 00:00:00 2001 From: Jussi Laako Date: Sun, 15 Oct 2017 12:41:32 +0300 Subject: ALSA: usb-audio: Add native DSD support for Pro-Ject Pre Box S2 Digital Add native DSD support quirk for Pro-Ject Pre Box S2 Digital USB id 2772:0230. Signed-off-by: Jussi Laako Cc: Signed-off-by: Takashi Iwai --- sound/usb/quirks.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 9ddaae3784f5..4f5f18f22974 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1354,6 +1354,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip, case USB_ID(0x20b1, 0x2008): /* Matrix Audio X-Sabre */ case USB_ID(0x20b1, 0x300a): /* Matrix Audio Mini-i Pro */ case USB_ID(0x22d9, 0x0416): /* OPPO HA-1 */ + case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */ if (fp->altsetting == 2) return SNDRV_PCM_FMTBIT_DSD_U32_BE; break; -- cgit v1.2.3 From 8009d506a1dd00cf436b0c4cca0dcec130580a21 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 18 Oct 2017 00:45:49 +0100 Subject: ALSA: seq: Enable 'use' locking in all configurations The 'use' locking macros are no-ops if neither SMP or SND_DEBUG is enabled. This might once have been OK in non-preemptible configurations, but even in that case snd_seq_read() may sleep while relying on a 'use' lock. So always use the proper implementations. Cc: stable@vger.kernel.org Signed-off-by: Ben Hutchings Signed-off-by: Takashi Iwai --- sound/core/seq/seq_lock.c | 4 ---- sound/core/seq/seq_lock.h | 12 ------------ 2 files changed, 16 deletions(-) diff --git a/sound/core/seq/seq_lock.c b/sound/core/seq/seq_lock.c index 0ff7926a5a69..cda64b489e42 100644 --- a/sound/core/seq/seq_lock.c +++ b/sound/core/seq/seq_lock.c @@ -23,8 +23,6 @@ #include #include "seq_lock.h" -#if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG) - /* wait until all locks are released */ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line) { @@ -41,5 +39,3 @@ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line) } } EXPORT_SYMBOL(snd_use_lock_sync_helper); - -#endif diff --git a/sound/core/seq/seq_lock.h b/sound/core/seq/seq_lock.h index 54044bc2c9ef..ac38031c370e 100644 --- a/sound/core/seq/seq_lock.h +++ b/sound/core/seq/seq_lock.h @@ -3,8 +3,6 @@ #include -#if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG) - typedef atomic_t snd_use_lock_t; /* initialize lock */ @@ -20,14 +18,4 @@ typedef atomic_t snd_use_lock_t; void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line); #define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__) -#else /* SMP || CONFIG_SND_DEBUG */ - -typedef spinlock_t snd_use_lock_t; /* dummy */ -#define snd_use_lock_init(lockp) /**/ -#define snd_use_lock_use(lockp) /**/ -#define snd_use_lock_free(lockp) /**/ -#define snd_use_lock_sync(lockp) /**/ - -#endif /* SMP || CONFIG_SND_DEBUG */ - #endif /* __SND_SEQ_LOCK_H */ -- cgit v1.2.3 From 098a0a62c1554f5a3813ef1b8539563214ada8f6 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 17 Oct 2017 16:38:55 +0200 Subject: ALSA: hda: Abort capability probe at invalid register read The loop in snd_hdac_bus_parse_capabilities() may go to nirvana when it hits an invalid register value read: BUG: unable to handle kernel paging request at ffffad5dc41f3fff IP: pci_azx_readl+0x5/0x10 [snd_hda_intel] Call Trace: snd_hdac_bus_parse_capabilities+0x3c/0x1f0 [snd_hda_core] azx_probe_continue+0x7d5/0x940 [snd_hda_intel] ..... This happened on a new Intel machine, and we need to check the value and abort the loop accordingly. [Note: the fixes tag below indicates only the commit where this patch can be applied; the original problem was introduced even before that commit] Fixes: 6720b38420a0 ("ALSA: hda - move bus_parse_capabilities to core") Cc: Acked-by: Vinod Koul Signed-off-by: Takashi Iwai --- sound/hda/hdac_controller.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c index 978dc1801b3a..f6d2985b2520 100644 --- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -284,6 +284,11 @@ int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus) dev_dbg(bus->dev, "HDA capability ID: 0x%x\n", (cur_cap & AZX_CAP_HDR_ID_MASK) >> AZX_CAP_HDR_ID_OFF); + if (cur_cap == -1) { + dev_dbg(bus->dev, "Invalid capability reg read\n"); + break; + } + switch ((cur_cap & AZX_CAP_HDR_ID_MASK) >> AZX_CAP_HDR_ID_OFF) { case AZX_ML_CAP_ID: dev_dbg(bus->dev, "Found ML capability\n"); -- cgit v1.2.3 From 6bf88a343db2b3c160edf9b82a74966b31cc80bd Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 17 Oct 2017 11:58:17 +0200 Subject: ALSA: hda: Remove superfluous '-' added by printk conversion While converting the error messages to the standard macros in the commit 4e76a8833fac ("ALSA: hda - Replace with standard printk"), a superfluous '-' slipped in the code mistakenly. Its influence is almost negligible, merely shows a dB value as negative integer instead of positive integer (or vice versa) in the rare error message. So let's kill this embarrassing byte to show more correct value. Fixes: 4e76a8833fac ("ALSA: hda - Replace with standard printk") Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 3db26c451837..b6cf9684c2ec 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1824,7 +1824,7 @@ static int get_kctl_0dB_offset(struct hda_codec *codec, return -1; if (*step_to_check && *step_to_check != step) { codec_err(codec, "Mismatching dB step for vmaster slave (%d!=%d)\n", -- *step_to_check, step); + *step_to_check, step); return -1; } *step_to_check = step; -- cgit v1.2.3 From a91d66129fb9bcead12af3ed2008d6ddbf179509 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 16 Oct 2017 11:39:28 +0200 Subject: ALSA: hda - Fix incorrect TLV callback check introduced during set_fs() removal The commit 99b5c5bb9a54 ("ALSA: hda - Remove the use of set_fs()") converted the get_kctl_0dB_offset() call for killing set_fs() usage in HD-audio codec code. The conversion assumed that the TLV callback used in HD-audio code is only snd_hda_mixer_amp() and applies the TLV calculation locally. Although this assumption is correct, and all slave kctls are actually with that callback, the current code is still utterly buggy; it doesn't hit this condition and falls back to the next check. It's because the function gets called after adding slave kctls to vmaster. By assigning a slave kctl, the slave kctl object is faked inside vmaster code, and the whole kctl ops are overridden. Thus the callback op points to a different value from what we've assumed. More badly, as reported by the KERNEXEC and UDEREF features of PaX, the code flow turns into the unexpected pitfall. The next fallback check is SNDRV_CTL_ELEM_ACCESS_TLV_READ access bit, and this always hits for each kctl with TLV. Then it evaluates the callback function pointer wrongly as if it were a TLV array. Although currently its side-effect is fairly limited, this incorrect reference may lead to an unpleasant result. For addressing the regression, this patch introduces a new helper to vmaster code, snd_ctl_apply_vmaster_slaves(). This works similarly like the existing map_slaves() in hda_codec.c: it loops over the slave list of the given master, and applies the given function to each slave. Then the initializer function receives the right kctl object and we can compare the correct pointer instead of the faked one. Also, for catching the similar breakage in future, give an error message when the unexpected TLV callback is found and bail out immediately. Fixes: 99b5c5bb9a54 ("ALSA: hda - Remove the use of set_fs()") Reported-by: PaX Team Cc: # v4.13 Signed-off-by: Takashi Iwai --- include/sound/control.h | 3 ++ sound/core/vmaster.c | 31 +++++++++++++++ sound/pci/hda/hda_codec.c | 97 +++++++++++++++++++++++++++-------------------- 3 files changed, 89 insertions(+), 42 deletions(-) diff --git a/include/sound/control.h b/include/sound/control.h index bd7246de58e7..a1f1152bc687 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -248,6 +248,9 @@ int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl, void *private_data); void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only); #define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true) +int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl, + int (*func)(struct snd_kcontrol *, void *), + void *arg); /* * Helper functions for jack-detection controls diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index 6c58e6f73a01..e43af18d4383 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -484,3 +484,34 @@ void snd_ctl_sync_vmaster(struct snd_kcontrol *kcontrol, bool hook_only) master->hook(master->hook_private_data, master->val); } EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster); + +/** + * snd_ctl_apply_vmaster_slaves - Apply function to each vmaster slave + * @kctl: vmaster kctl element + * @func: function to apply + * @arg: optional function argument + * + * Apply the function @func to each slave kctl of the given vmaster kctl. + * Returns 0 if successful, or a negative error code. + */ +int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl, + int (*func)(struct snd_kcontrol *, void *), + void *arg) +{ + struct link_master *master; + struct link_slave *slave; + int err; + + master = snd_kcontrol_chip(kctl); + err = master_init(master); + if (err < 0) + return err; + list_for_each_entry(slave, &master->slaves, list) { + err = func(&slave->slave, arg); + if (err < 0) + return err; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_ctl_apply_vmaster_slaves); diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index b6cf9684c2ec..a0989d231fd0 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1803,36 +1803,6 @@ static int check_slave_present(struct hda_codec *codec, return 1; } -/* guess the value corresponding to 0dB */ -static int get_kctl_0dB_offset(struct hda_codec *codec, - struct snd_kcontrol *kctl, int *step_to_check) -{ - int _tlv[4]; - const int *tlv = NULL; - int val = -1; - - if ((kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) && - kctl->tlv.c == snd_hda_mixer_amp_tlv) { - get_ctl_amp_tlv(kctl, _tlv); - tlv = _tlv; - } else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ) - tlv = kctl->tlv.p; - if (tlv && tlv[0] == SNDRV_CTL_TLVT_DB_SCALE) { - int step = tlv[3]; - step &= ~TLV_DB_SCALE_MUTE; - if (!step) - return -1; - if (*step_to_check && *step_to_check != step) { - codec_err(codec, "Mismatching dB step for vmaster slave (%d!=%d)\n", - *step_to_check, step); - return -1; - } - *step_to_check = step; - val = -tlv[2] / step; - } - return val; -} - /* call kctl->put with the given value(s) */ static int put_kctl_with_value(struct snd_kcontrol *kctl, int val) { @@ -1847,19 +1817,58 @@ static int put_kctl_with_value(struct snd_kcontrol *kctl, int val) return 0; } -/* initialize the slave volume with 0dB */ -static int init_slave_0dB(struct hda_codec *codec, - void *data, struct snd_kcontrol *slave) +struct slave_init_arg { + struct hda_codec *codec; + int step; +}; + +/* initialize the slave volume with 0dB via snd_ctl_apply_vmaster_slaves() */ +static int init_slave_0dB(struct snd_kcontrol *kctl, void *_arg) { - int offset = get_kctl_0dB_offset(codec, slave, data); - if (offset > 0) - put_kctl_with_value(slave, offset); + struct slave_init_arg *arg = _arg; + int _tlv[4]; + const int *tlv = NULL; + int step; + int val; + + if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) { + if (kctl->tlv.c != snd_hda_mixer_amp_tlv) { + codec_err(arg->codec, + "Unexpected TLV callback for slave %s:%d\n", + kctl->id.name, kctl->id.index); + return 0; /* ignore */ + } + get_ctl_amp_tlv(kctl, _tlv); + tlv = _tlv; + } else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ) + tlv = kctl->tlv.p; + + if (!tlv || tlv[0] != SNDRV_CTL_TLVT_DB_SCALE) + return 0; + + step = tlv[3]; + step &= ~TLV_DB_SCALE_MUTE; + if (!step) + return 0; + if (arg->step && arg->step != step) { + codec_err(arg->codec, + "Mismatching dB step for vmaster slave (%d!=%d)\n", + arg->step, step); + return 0; + } + + arg->step = step; + val = -tlv[2] / step; + if (val > 0) { + put_kctl_with_value(kctl, val); + return val; + } + return 0; } -/* unmute the slave */ -static int init_slave_unmute(struct hda_codec *codec, - void *data, struct snd_kcontrol *slave) +/* unmute the slave via snd_ctl_apply_vmaster_slaves() */ +static int init_slave_unmute(struct snd_kcontrol *slave, void *_arg) { return put_kctl_with_value(slave, 1); } @@ -1919,9 +1928,13 @@ int __snd_hda_add_vmaster(struct hda_codec *codec, char *name, /* init with master mute & zero volume */ put_kctl_with_value(kctl, 0); if (init_slave_vol) { - int step = 0; - map_slaves(codec, slaves, suffix, - tlv ? init_slave_0dB : init_slave_unmute, &step); + struct slave_init_arg arg = { + .codec = codec, + .step = 0, + }; + snd_ctl_apply_vmaster_slaves(kctl, + tlv ? init_slave_0dB : init_slave_unmute, + &arg); } if (ctl_ret) -- cgit v1.2.3