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usb: track altsetting in USBDevice

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Also handle {GET,SET}_INTERFACE in common code (usb-desc.c).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-08-30 13:21:27 +02:00
parent 65360511a2
commit 1de14d43e2
12 changed files with 90 additions and 79 deletions
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10
usb-linux.c
View file

@ -544,6 +544,10 @@ static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
int interface, nb_interfaces;
int ret, i;
for (i = 0; i < USB_MAX_INTERFACES; i++) {
dev->dev.altsetting[i] = 0;
}
if (configuration == 0) { /* address state - ignore */
dev->dev.ninterfaces = 0;
dev->dev.configuration = 0;
@ -997,6 +1001,10 @@ static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
}
}
if (iface >= USB_MAX_INTERFACES) {
return USB_RET_STALL;
}
si.interface = iface;
si.altsetting = alt;
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
@ -1007,6 +1015,8 @@ static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
if (ret < 0) {
return ctrl_error();
}
s->dev.altsetting[iface] = alt;
usb_linux_update_endp_table(s);
return 0;
}