FAILED: patch "[PATCH] ASoC: acpi: fix machine driver selection based on quirk" failed to apply to 4.14-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

>From 5c256045b87b8aa8e5bc9d2e2fdc0802351c1f99 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Fri, 5 Jan 2018 14:55:33 -0600
Subject: [PATCH] ASoC: acpi: fix machine driver selection based on quirk
MIME-Version: 1.0
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The ACPI/machine-driver code refactoring introduced in 4.13 introduced
a regression for cases where we need a DMI-based quirk to select the
machine driver (the BIOS reports an invalid HID). The fix is just to
make sure the results of the quirk are actually used.

Fixes: 54746dabf770 ('ASoC: Improve machine driver selection based on quirk data')
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96691
Tested-by: Nicole Færber <nicole.faerber@dpin.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

diff --git a/sound/soc/soc-acpi.c b/sound/soc/soc-acpi.c
index f21df28bc28e..d4dd2efea45e 100644
--- a/sound/soc/soc-acpi.c
+++ b/sound/soc/soc-acpi.c
@@ -84,11 +84,9 @@ snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
 
 	for (mach = machines; mach->id[0]; mach++) {
 		if (snd_soc_acpi_check_hid(mach->id) == true) {
-			if (mach->machine_quirk == NULL)
-				return mach;
-
-			if (mach->machine_quirk(mach) != NULL)
-				return mach;
+			if (mach->machine_quirk)
+				mach = mach->machine_quirk(mach);
+			return mach;
 		}
 	}
 	return NULL;