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bug #43268: usb_drain() call causes LUFA AVR-ISP MKII Code to Fail 

* usb_libusb.c (usbdev_drain): Make this a dummy function only.



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1334 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
joerg_wunsch 2014-09-22 10:01:39 +00:00
parent e969c07d29
commit 45fecdcb66
2 changed files with 15 additions and 15 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2014-09-22 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
bug #43268: usb_drain() call causes LUFA AVR-ISP MKII Code to Fail
* usb_libusb.c (usbdev_drain): Make this a dummy function only.
2014-08-19 Rene Liebscher <R.Liebscher@gmx.de>
patch #7694 Add support for the atmega32m1

25
usb_libusb.c
View File

@ -565,21 +565,16 @@ static int usbdev_recv_frame(union filedescriptor *fd, unsigned char *buf, size_
static int usbdev_drain(union filedescriptor *fd, int display)
{
usb_dev_handle *udev = (usb_dev_handle *)fd->usb.handle;
int rv;
if (udev == NULL)
return -1;
do {
if (fd->usb.use_interrupt_xfer)
rv = usb_interrupt_read(udev, fd->usb.rep, usbbuf, fd->usb.max_xfer, 100);
else
rv = usb_bulk_read(udev, fd->usb.rep, usbbuf, fd->usb.max_xfer, 100);
if (rv > 0)
avrdude_message(MSG_TRACE, "%s: usbdev_drain(): flushed %d characters\n",
progname, rv);
} while (rv > 0);
/*
* There is not much point in trying to flush any data
* on an USB endpoint, as the endpoint is supposed to
* start afresh after being configured from the host.
*
* As trying to flush the data here caused strange effects
* in some situations (see
* https://savannah.nongnu.org/bugs/index.php?43268 )
* better avoid it.
*/
return 0;
}