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When device is detached make sure to stop the controller and make

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it return zero-length USB packet.
This commit is contained in:
Pyun YongHyeon 2016-08-18 07:11:31 +00:00
parent 15b5fb58b6
commit 9ab0e2a7e0
1 changed files with 18 additions and 0 deletions
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18
sys/dev/usb/net/if_axge.c
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@ -580,9 +580,27 @@ axge_detach(device_t dev)
{
struct axge_softc *sc;
struct usb_ether *ue;
uint16_t val;
sc = device_get_softc(dev);
ue = &sc->sc_ue;
if (device_is_attached(dev)) {
AXGE_LOCK(sc);
/*
* XXX
* ether_ifdetach(9) should be called first.
*/
axge_stop(ue);
/* Force bulk-in to return a zero-length USB packet. */
val = axge_read_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR);
val |= EPPRCR_BZ | EPPRCR_IPRL;
axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR, val);
/* Change clock. */
axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_CLK_SELECT, 0);
/* Disable MAC. */
axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR, 0);
AXGE_UNLOCK(sc);
}
usbd_transfer_unsetup(sc->sc_xfer, AXGE_N_TRANSFER);
uether_ifdetach(ue);
mtx_destroy(&sc->sc_mtx);