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-rw-r--r--sys/dev/usb/usbdi.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/sys/dev/usb/usbdi.c b/sys/dev/usb/usbdi.c
index 966b8ce..fd65b30 100644
--- a/sys/dev/usb/usbdi.c
+++ b/sys/dev/usb/usbdi.c
@@ -1119,6 +1119,23 @@ usb_match_device(const struct usb_devno *tbl, u_int nentries, u_int sz,
return (NULL);
}
+/*
+ * usbd_ratecheck() can limit the number of error messages that occurs.
+ * When a device is unplugged it may take up to 0.25s for the hub driver
+ * to notice it. If the driver continuosly tries to do I/O operations
+ * this can generate a large number of messages.
+ */
+int
+usbd_ratecheck(struct timeval *last)
+{
+#if 0
+ static struct timeval errinterval = { 0, 2500000 }; /* 0.25 s*/
+
+ return (ratecheck(last, &errinterval));
+#endif
+ return (1);
+}
+
#if defined(__FreeBSD__)
int
usbd_driver_load(module_t mod, int what, void *arg)
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