[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>
git-mirror · Mar 22, 2006 · 3e96443 · 3e96443
1 parent ede3531
commit 3e96443
Showing 1 changed file with 4 additions and 0 deletions.
diff --git 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: