# 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 1.427 -> 1.428
# drivers/usb/devio.c 1.8 -> 1.9
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/04/18 [EMAIL PROTECTED] 1.428
# [PATCH] USB devio device removal fix
#
# USB devio device removal fix
#
# Fixes problem with using usbfs and a device is removed while the
# device still has pending events.
# --------------------------------------------
#
diff -Nru a/drivers/usb/devio.c b/drivers/usb/devio.c
--- a/drivers/usb/devio.c Thu Apr 18 13:53:53 2002
+++ b/drivers/usb/devio.c Thu Apr 18 13:53:53 2002
@@ -286,7 +286,9 @@
}
/*
- * interface claiming
+ * interface claims are made only at the request of user level code,
+ * which can also release them (explicitly or by closing files).
+ * they're also undone when devices disconnect.
*/
static void *driver_probe(struct usb_device *dev, unsigned int intf,
@@ -299,7 +301,20 @@
{
struct dev_state *ps = (struct dev_state *)context;
+ if (!ps)
+ return;
+
+ /* this waits till synchronous requests complete */
+ down_write (&ps->devsem);
+
+ /* prevent new I/O requests */
+ ps->dev = 0;
ps->ifclaimed = 0;
+
+ /* force async requests to complete */
+ destroy_all_async (ps);
+
+ up_write (&ps->devsem);
}
struct usb_driver usbdevfs_driver = {
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