From 39f0ccde3624e7cf882faccf7f72a47b7a763bfb Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 9 May 2016 17:47:37 +0200 Subject: ALSA: hda - Clarify CONFIG_SND_HDA_RECONFIG usages Since the recent rewrite of HD-audio infrastructure, CONFIG_SND_HDA_RECONFIG has a slightly different meaning. In the earlier versions, it implicitly assumed only the usage via hwdep sysfs entries. Meanwhile, in the recent version, this option is meant to enable the reconfig code in HD-audio driver, which may be used by the patch loader without hwdep interface. This patch tries to clarify the usage pattern a bit better, hopefully avoid the further confusion. Reported-by: Jochen Henneberg Signed-off-by: Takashi Iwai --- sound/pci/hda/Kconfig | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'sound/pci') diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig index bb02c2d48fd5..7f3b5ed81995 100644 --- a/sound/pci/hda/Kconfig +++ b/sound/pci/hda/Kconfig @@ -50,9 +50,13 @@ config SND_HDA_RECONFIG bool "Allow dynamic codec reconfiguration" help Say Y here to enable the HD-audio codec re-configuration feature. - This adds the sysfs interfaces to allow user to clear the whole - codec configuration, change the codec setup, add extra verbs, - and re-configure the codec dynamically. + It allows user to clear the whole codec configuration, change the + codec setup, add extra verbs, and re-configure the codec dynamically. + + Note that this item alone doesn't provide the sysfs interface, but + enables the feature just for the patch loader below. + If you need the traditional sysfs entries for the manual interaction, + turn on CONFIG_SND_HDA_HWDEP as well. config SND_HDA_INPUT_BEEP bool "Support digital beep via input layer" -- cgit v1.2.3