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linux/sound/pci/hda
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Takashi Iwai 8a7d6003df ALSA: hda - Skip jack and others for non-existing PCM streams 
When CONFIG_SND_DYNAMIC_MINORS isn't set, there are only limited
number of devices available, and HD-audio, especially with HDMI/DP
codec, will fail to create more than two devices.

The driver warns about the lack of such devices and skips the PCM
device creations, but the HDMI driver still tries to create the
corresponding JACK, SPDIF and ELD controls even for the non-existing
PCM substreams.  This results in confusion on user-space, and even may
break the operation.

Similarly, Intel HDMI/DP codec builds the ELD notification from i915
graphics driver, and this may be broken if a notification is sent for
the non-existing PCM stream.

This patch adds the check of the existence of the assigned PCM
substream in the both scenarios above, and skips the further operation
if the PCM substream is not assigned.

Fixes: 9152085def ("ALSA: hda - add DP MST audio support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-04-25 16:37:19 +02:00
..
ca0132_regs.h ALSA: hda: ca0132_regs.h: Fix typo in include guard 2014-08-22 11:24:11 +02:00
dell_wmi_helper.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hda_auto_parser.c ALSA: hda - A new flag to enforce prefix to each pin 2017-04-10 17:44:39 +02:00
hda_auto_parser.h ALSA: hda - Sort input pins depending on amp caps 2014-09-23 15:57:32 +02:00
hda_beep.c ALSA: hda-beep: add SPDX identifiers 2018-02-20 16:49:59 +01:00
hda_beep.h ALSA: hda-beep: add SPDX identifiers 2018-02-20 16:49:59 +01:00
hda_bind.c ALSA: hda: Fix forget to free resource in error handling code path in hda_codec_driver_probe 2017-09-04 17:33:53 +02:00
hda_codec.c ALSA: hda: Make use of core codec functions to sync power state 2018-02-12 13:59:48 +01:00
hda_codec.h ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm 2017-09-03 16:33:42 +02:00
hda_controller_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hda_controller.c ALSA: hda - Skip card registration when no codec is found 2017-06-28 12:45:34 +02:00
hda_controller.h ALSA: hda - Fix doubly initialization of i915 component 2017-06-30 08:58:53 +02:00
hda_eld.c ALSA: hda - Use snd_hdac namespace prefix for chmap exported APIs 2016-03-07 15:46:06 +01:00
hda_generic.c ALSA: hda - silence uninitialized variable warning in activate_amp_in() 2017-10-13 15:14:44 +02:00
hda_generic.h ALSA: hda - Allow to enable/disable vmaster build explicitly 2017-04-10 17:45:27 +02:00
hda_hwdep.c ALSA: hda: Hardening for potential Spectre v1 2018-04-25 10:37:46 +02:00
hda_intel_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hda_intel.c sound fixes for 4.17-rc2 2018-04-21 10:32:16 -07:00
hda_intel.h vga_switcheroo: Use device link for HDA controller 2018-03-13 22:58:09 +01:00
hda_jack.c ALSA: hda - Fix bad dereference of jack object 2016-02-09 12:16:31 +01:00
hda_jack.h ALSA: hda - Fix bad dereference of jack object 2016-02-09 12:16:31 +01:00
hda_local.h ALSA: hda: Make use of core codec functions to sync power state 2018-02-12 13:59:48 +01:00
hda_proc.c ALSA: hda/proc - Fix racy string access for power states 2015-08-17 15:12:04 +02:00
hda_sysfs.c ALSA: hda: constify attribute_group structures. 2017-06-29 18:20:21 +02:00
hda_tegra.c ALSA: hda/tegra: iomem fixups for sparse warnings 2016-06-22 15:19:10 +02:00
Kconfig ALSA: hda - Use IS_REACHABLE() for dependency on input 2018-01-15 20:16:54 +01:00
local.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
patch_analog.c ALSA: hda: make snd_kcontrol_new const 2017-08-16 14:29:08 +02:00
patch_ca0110.c ALSA: hda - convert to hda_device_id 2015-10-20 10:15:20 +02:00
patch_ca0132.c ALSA: hda/ca0132 - use ARRAY_SIZE 2017-10-13 15:14:08 +02:00
patch_cirrus.c ALSA: hda - Apply the existing quirk to iMac 14,1 2018-01-10 11:11:54 +01:00
patch_cmedia.c ALSA: hda - convert to hda_device_id 2015-10-20 10:15:20 +02:00
patch_conexant.c ALSA: hda: add dock and led support for HP ProBook 640 G2 2018-03-08 17:37:10 +01:00
patch_hdmi.c ALSA: hda - Skip jack and others for non-existing PCM streams 2018-04-25 16:37:19 +02:00
patch_realtek.c ALSA: hda/realtek - change the location for one of two front mics 2018-04-25 11:35:50 +02:00
patch_si3054.c ALSA: hda: Constify hw_constraints 2017-06-09 10:42:52 +02:00
patch_sigmatel.c ALSA: hda: make snd_kcontrol_new const 2017-08-16 14:29:08 +02:00
patch_via.c ALSA: hda - convert to hda_device_id 2015-10-20 10:15:20 +02:00
thinkpad_helper.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00