From: Clemens Ladisch <clemens@ladisch.de>
Date: Tue, 14 Mar 2006 07:06:12 +0000 (+0100)
Subject: [ALSA] usb-audio: add error message about missing split iso support
X-Git-Tag: v2.6.17-rc1~1129^2^2~29
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3e964432f56f05a8ef639902796e476456b230ad;p=thirdparty%2Fkernel%2Flinux.git

[ALSA] usb-audio: add error message about missing split iso support

Modules: USB generic driver

Add an error message for -ENOSYS for situations when split iso support
is needed but not enabled.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
---

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 45157d3cf7896..6fad2c40c77cf 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -788,6 +788,10 @@ static const char *usb_error_string(int err)
 		return "device disabled";
 	case -EHOSTUNREACH:
 		return "device suspended";
+#ifndef CONFIG_USB_EHCI_SPLIT_ISO
+	case -ENOSYS:
+		return "enable CONFIG_USB_EHCI_SPLIT_ISO to play through a hub";
+#endif
 	case -EINVAL:
 	case -EAGAIN:
 	case -EFBIG: