[PATCH] usbserial: Regression in USB generic serial driver
Kernel version 2.6.13 introduced a regression in the generic USB
serial converter driver (usbserial.o, drivers/usb/serial/generic.c).
The bug manifests, as far as I can tell, whenever you attempt to write
to the device -- the write will never complete (write() returns 0, or
blocks).
Signed-off-by: Randall Nortman <oss@wonderclown.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index ddde5fb..5f7d319 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -223,7 +223,7 @@
dbg("%s - port %d", __FUNCTION__, port->number);
if (serial->num_bulk_out) {
- if (port->write_urb_busy)
+ if (!(port->write_urb_busy))
room = port->bulk_out_size;
}