From: Jaroslav Kysela <perex@perex.cz>
Date: Tue, 22 Nov 2022 08:54:22 +0000 (+0100)
Subject: USB-Audio: the environment variable UCM_USB_PERIOD_TIME may be undefined
X-Git-Tag: v1.2.9~51
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=5c865236e8de9fd75c741892fd3bd2cff62d4f3f;p=alsa-ucm-conf.git

USB-Audio: the environment variable UCM_USB_PERIOD_TIME may be undefined

Fixes: 71ff24c ("USB-Audio: allow to configure period size for PCM split")
BugLink: https://github.com/alsa-project/alsa-ucm-conf/pull/240
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/ucm2/USB-Audio/USB-Audio.conf b/ucm2/USB-Audio/USB-Audio.conf
index fdc29ec..1c11da9 100644
--- a/ucm2/USB-Audio/USB-Audio.conf
+++ b/ucm2/USB-Audio/USB-Audio.conf
@@ -7,7 +7,7 @@ Define.SplitPCMPeriodTime 10000		# 10ms
 If.env1 {
 	Condition {
 		Type String
-		Empty "${env:UCM_USB_PERIOD_TIME}"
+		Empty "$${env:UCM_USB_PERIOD_TIME}"
 	}
 	False.Define.SplitPCMPeriodTime "${env:UCM_USB_PERIOD_TIME}"
 }