diff options
| -rw-r--r-- | hw/usb/host-libusb.c | 18 | ||||
| -rw-r--r-- | hw/usb/pcap.c | 2 |
2 files changed, 17 insertions, 3 deletions
diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c index 7dde3d1..354713a 100644 --- a/hw/usb/host-libusb.c +++ b/hw/usb/host-libusb.c @@ -836,7 +836,7 @@ static void usb_host_ep_update(USBHostDevice *s) struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp; #endif uint8_t devep, type; - int pid, ep; + int pid, ep, alt; int rc, i, e; usb_ep_reset(udev); @@ -848,8 +848,20 @@ static void usb_host_ep_update(USBHostDevice *s) conf->bConfigurationValue, true); for (i = 0; i < conf->bNumInterfaces; i++) { - assert(udev->altsetting[i] < conf->interface[i].num_altsetting); - intf = &conf->interface[i].altsetting[udev->altsetting[i]]; + /* + * The udev->altsetting array indexes alternate settings + * by the interface number. Get the 0th alternate setting + * first so that we can grab the interface number, and + * then correct the alternate setting value if necessary. + */ + intf = &conf->interface[i].altsetting[0]; + alt = udev->altsetting[intf->bInterfaceNumber]; + + if (alt != 0) { + assert(alt < conf->interface[i].num_altsetting); + intf = &conf->interface[i].altsetting[alt]; + } + trace_usb_host_parse_interface(s->bus_num, s->addr, intf->bInterfaceNumber, intf->bAlternateSetting, true); diff --git a/hw/usb/pcap.c b/hw/usb/pcap.c index 4350989..dbff00b 100644 --- a/hw/usb/pcap.c +++ b/hw/usb/pcap.c @@ -127,6 +127,7 @@ static void do_usb_pcap_ctrl(FILE *fp, USBPacket *p, bool setup) .xfer_type = usbmon_xfer_type[USB_ENDPOINT_XFER_CONTROL], .epnum = in ? 0x80 : 0, .devnum = dev->addr, + .flag_setup = setup ? 0 : '-', .flag_data = '=', .length = dev->setup_len, }; @@ -169,6 +170,7 @@ static void do_usb_pcap_data(FILE *fp, USBPacket *p, bool setup) .xfer_type = usbmon_xfer_type[p->ep->type], .epnum = usbmon_epnum(p), .devnum = p->ep->dev->addr, + .flag_setup = '-', .flag_data = '=', .length = p->iov.size, }; |