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From c469652bb5e8fb715db7d152f46d33b3740c9b87 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 15 Jan 2018 10:44:35 +0100
Subject: [PATCH] ALSA: hda - Use IS_REACHABLE() for dependency on input
Git-commit: c469652bb5e8fb715db7d152f46d33b3740c9b87
Patch-mainline: v4.16-rc1
References: bsc#1051510

The commit ffcd28d88e4f ("ALSA: hda - Select INPUT for Realtek
HD-audio codec") introduced the reverse-selection of CONFIG_INPUT for
Realtek codec in order to avoid the mess with dependency between
built-in and modules.  Later on, we obtained IS_REACHABLE() macro
exactly for this kind of problems, and now we can remove th INPUT
selection in Kconfig and put IS_REACHABLE(INPUT) to the appropriate
places in the code, so that the driver doesn't need to select other
subsystem forcibly.

Fixes: ffcd28d88e4f ("ALSA: hda - Select INPUT for Realtek HD-audio codec")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # and build-tested
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/pci/hda/Kconfig         |    1 -
 sound/pci/hda/patch_realtek.c |    5 +++++
 2 files changed, 5 insertions(+), 1 deletion(-)

--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -88,7 +88,6 @@ config SND_HDA_PATCH_LOADER
 config SND_HDA_CODEC_REALTEK
 	tristate "Build Realtek HD-audio codec support"
 	select SND_HDA_GENERIC
-	select INPUT
 	help
 	  Say Y or M here to include Realtek HD-audio codec support in
 	  snd-hda-intel driver, such as ALC880.
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3707,6 +3707,7 @@ static void alc280_fixup_hp_gpio4(struct
 	}
 }
 
+#if IS_REACHABLE(INPUT)
 static void gpio2_mic_hotkey_event(struct hda_codec *codec,
 				   struct hda_jack_callback *event)
 {
@@ -3839,6 +3840,10 @@ static void alc233_fixup_lenovo_line2_mi
 		spec->kb_dev = NULL;
 	}
 }
+#else /* INPUT */
+#define alc280_fixup_hp_gpio2_mic_hotkey	NULL
+#define alc233_fixup_lenovo_line2_mic_hotkey	NULL
+#endif /* INPUT */
 
 static void alc269_fixup_hp_line1_mic1_led(struct hda_codec *codec,
 				const struct hda_fixup *fix, int action)