# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.484 -> 1.485
# drivers/usb/core/message.c 1.3 -> 1.4
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/06/14 [EMAIL PROTECTED] 1.485
# [PATCH] usb_set_interface for discontinous altsettings
#
# during debugging ALSA's usb audio driver, it's found out that there
# are devices with insuccessive alternate settings.
#
# for example, m-audio's quattro usb audio has audio streaming
# descriptors jumping from altset 0 to 4 or 3.
#
# apparently, usb_set_interface() sends the array index instead of the
# actual altset value. the attached patch fixes this behavior.
# --------------------------------------------
#
diff -Nru a/drivers/usb/core/message.c b/drivers/usb/core/message.c
--- a/drivers/usb/core/message.c Fri Jun 14 14:15:28 2002
+++ b/drivers/usb/core/message.c Fri Jun 14 14:15:28 2002
@@ -471,9 +471,13 @@
return 0;
}
+ if (alternate < 0 || alternate >= iface->num_altsetting)
+ return -EINVAL;
+
if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, alternate,
- interface, NULL, 0, HZ * 5)) < 0)
+ USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
+ iface->altsetting[alternate].bAlternateSetting,
+ interface, NULL, 0, HZ * 5)) < 0)
return ret;
iface->act_altsetting = alternate;
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