path: root/hw/usb-serial.c
diff options
authorGerd Hoffmann <kraxel@redhat.com>2011-07-12 15:22:25 +0200
committerGerd Hoffmann <kraxel@redhat.com>2011-08-04 15:51:22 +0200
commit4f4321c11ff6e98583846bfd6f0e81954924b003 (patch)
tree5b4c7f185539ed6a91b1c63c0841de7cff6a3ac5 /hw/usb-serial.c
parentd35bf9ade5293171f13bc5fd1460920a258e3e39 (diff)
usb: use iovecs in USBPacket
Zap data pointer from USBPacket, add a QEMUIOVector instead. Add a bunch of helper functions to manage USBPacket data. Switch over users to the new interface. Note that USBPacket->len was used for two purposes: First to pass in the buffer size and second to return the number of transfered bytes or the status code on async transfers. There is a new result variable for the latter. A new status code was added to catch uninitialized result. Nobody creates iovecs with more than one element (yet). Some users are (temporarely) limited to iovecs with a single element to keep the patch size as small as possible. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb-serial.c')
1 files changed, 3 insertions, 2 deletions
diff --git a/hw/usb-serial.c b/hw/usb-serial.c
index 298c1e9d9..09731da48 100644
--- a/hw/usb-serial.c
+++ b/hw/usb-serial.c
@@ -361,10 +361,11 @@ static int usb_serial_handle_data(USBDevice *dev, USBPacket *p)
USBSerialState *s = (USBSerialState *)dev;
int ret = 0;
uint8_t devep = p->devep;
- uint8_t *data = p->data;
- int len = p->len;
+ uint8_t *data = p->iov.iov[0].iov_base;
+ int len = p->iov.iov[0].iov_len;
int first_len;
+ assert(p->iov.niov == 1); /* temporary */
switch (p->pid) {
if (devep != 2)