svn commit: r246614 - head/sys/dev/usb/wlan
Hans Petter Selasky
hselasky at FreeBSD.org
Sun Feb 10 10:36:19 UTC 2013
Author: hselasky
Date: Sun Feb 10 10:36:16 2013
New Revision: 246614
URL: http://svnweb.freebsd.org/changeset/base/246614
Log:
- Streamline detach logic in wlan drivers, so that
freed memory cannot be used during detach.
- Remove all panic() calls from the urtw driver because
panic() is not appropriate here.
- Remove redundant checks for device detached in
device detach callbacks.
- Use DEVMETHOD_END to mark end of device methods.
MFC after: 2 weeks
Modified:
head/sys/dev/usb/wlan/if_rum.c
head/sys/dev/usb/wlan/if_rumvar.h
head/sys/dev/usb/wlan/if_run.c
head/sys/dev/usb/wlan/if_runvar.h
head/sys/dev/usb/wlan/if_uath.c
head/sys/dev/usb/wlan/if_upgt.c
head/sys/dev/usb/wlan/if_upgtvar.h
head/sys/dev/usb/wlan/if_ural.c
head/sys/dev/usb/wlan/if_uralvar.h
head/sys/dev/usb/wlan/if_urtw.c
head/sys/dev/usb/wlan/if_urtwvar.h
head/sys/dev/usb/wlan/if_zyd.c
head/sys/dev/usb/wlan/if_zydreg.h
Modified: head/sys/dev/usb/wlan/if_rum.c
==============================================================================
--- head/sys/dev/usb/wlan/if_rum.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_rum.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -542,6 +542,11 @@ rum_detach(device_t self)
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic;
+ /* Prevent further ioctls */
+ RUM_LOCK(sc);
+ sc->sc_detached = 1;
+ RUM_UNLOCK(sc);
+
/* stop all USB transfers */
usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
@@ -556,7 +561,6 @@ rum_detach(device_t self)
if_free(ifp);
}
mtx_destroy(&sc->sc_mtx);
-
return (0);
}
@@ -1321,7 +1325,14 @@ rum_ioctl(struct ifnet *ifp, u_long cmd,
struct rum_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
- int error = 0, startall = 0;
+ int error;
+ int startall = 0;
+
+ RUM_LOCK(sc);
+ error = sc->sc_detached ? ENXIO : 0;
+ RUM_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
@@ -2365,8 +2376,7 @@ static device_method_t rum_methods[] = {
DEVMETHOD(device_probe, rum_match),
DEVMETHOD(device_attach, rum_attach),
DEVMETHOD(device_detach, rum_detach),
-
- { 0, 0 }
+ DEVMETHOD_END
};
static driver_t rum_driver = {
Modified: head/sys/dev/usb/wlan/if_rumvar.h
==============================================================================
--- head/sys/dev/usb/wlan/if_rumvar.h Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_rumvar.h Sun Feb 10 10:36:16 2013 (r246614)
@@ -106,6 +106,7 @@ struct rum_softc {
uint32_t rf_regs[4];
uint8_t txpow[44];
uint8_t sc_bssid[6];
+ uint8_t sc_detached;
struct {
uint8_t val;
Modified: head/sys/dev/usb/wlan/if_run.c
==============================================================================
--- head/sys/dev/usb/wlan/if_run.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_run.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -716,11 +716,14 @@ run_detach(device_t self)
struct ieee80211com *ic;
int i;
+ RUN_LOCK(sc);
+ sc->sc_detached = 1;
+ RUN_UNLOCK(sc);
+
/* stop all USB transfers */
usbd_transfer_unsetup(sc->sc_xfer, RUN_N_XFER);
RUN_LOCK(sc);
-
sc->ratectl_run = RUN_RATECTL_OFF;
sc->cmdq_run = sc->cmdq_key_set = RUN_CMDQ_ABORT;
@@ -3441,7 +3444,13 @@ run_ioctl(struct ifnet *ifp, u_long cmd,
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
int startall = 0;
- int error = 0;
+ int error;
+
+ RUN_LOCK(sc);
+ error = sc->sc_detached ? ENXIO : 0;
+ RUN_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
@@ -4963,8 +4972,7 @@ static device_method_t run_methods[] = {
DEVMETHOD(device_probe, run_match),
DEVMETHOD(device_attach, run_attach),
DEVMETHOD(device_detach, run_detach),
-
- { 0, 0 }
+ DEVMETHOD_END
};
static driver_t run_driver = {
Modified: head/sys/dev/usb/wlan/if_runvar.h
==============================================================================
--- head/sys/dev/usb/wlan/if_runvar.h Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_runvar.h Sun Feb 10 10:36:16 2013 (r246614)
@@ -239,6 +239,7 @@ struct run_softc {
uint8_t sta_running;
uint8_t rvp_cnt;
uint8_t rvp_bmap;
+ uint8_t sc_detached;
union {
struct run_rx_radiotap_header th;
Modified: head/sys/dev/usb/wlan/if_uath.c
==============================================================================
--- head/sys/dev/usb/wlan/if_uath.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_uath.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -504,29 +504,48 @@ uath_detach(device_t dev)
struct uath_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
+ unsigned int x;
- if (!device_is_attached(dev))
- return (0);
-
+ /*
+ * Prevent further allocations from RX/TX/CMD
+ * data lists and ioctls
+ */
UATH_LOCK(sc);
sc->sc_flags |= UATH_FLAG_INVALID;
+
+ STAILQ_INIT(&sc->sc_rx_active);
+ STAILQ_INIT(&sc->sc_rx_inactive);
+
+ STAILQ_INIT(&sc->sc_tx_active);
+ STAILQ_INIT(&sc->sc_tx_inactive);
+ STAILQ_INIT(&sc->sc_tx_pending);
+
+ STAILQ_INIT(&sc->sc_cmd_active);
+ STAILQ_INIT(&sc->sc_cmd_pending);
+ STAILQ_INIT(&sc->sc_cmd_waiting);
+ STAILQ_INIT(&sc->sc_cmd_inactive);
UATH_UNLOCK(sc);
- ieee80211_ifdetach(ic);
uath_stop(ifp);
callout_drain(&sc->stat_ch);
callout_drain(&sc->watchdog_ch);
- usbd_transfer_unsetup(sc->sc_xfer, UATH_N_XFERS);
+ /* drain USB transfers */
+ for (x = 0; x != UATH_N_XFERS; x++)
+ usbd_transfer_drain(sc->sc_xfer[x]);
- /* free buffers */
+ /* free data buffers */
UATH_LOCK(sc);
uath_free_rx_data_list(sc);
uath_free_tx_data_list(sc);
uath_free_cmd_list(sc, sc->sc_cmd);
UATH_UNLOCK(sc);
+ /* free USB transfers and some data buffers */
+ usbd_transfer_unsetup(sc->sc_xfer, UATH_N_XFERS);
+
+ ieee80211_ifdetach(ic);
if_free(ifp);
mtx_destroy(&sc->sc_mtx);
return (0);
@@ -934,10 +953,10 @@ uath_free_data_list(struct uath_softc *s
} else {
dp->buf = NULL;
}
-#ifdef UATH_DEBUG
- if (dp->ni != NULL)
- device_printf(sc->sc_dev, "Node isn't NULL\n");
-#endif
+ if (dp->ni != NULL) {
+ ieee80211_free_node(dp->ni);
+ dp->ni = NULL;
+ }
}
}
@@ -1025,10 +1044,6 @@ uath_alloc_tx_data_list(struct uath_soft
static void
uath_free_rx_data_list(struct uath_softc *sc)
{
-
- STAILQ_INIT(&sc->sc_rx_active);
- STAILQ_INIT(&sc->sc_rx_inactive);
-
uath_free_data_list(sc, sc->sc_rx, UATH_RX_DATA_LIST_COUNT,
1 /* free mbufs */);
}
@@ -1036,11 +1051,6 @@ uath_free_rx_data_list(struct uath_softc
static void
uath_free_tx_data_list(struct uath_softc *sc)
{
-
- STAILQ_INIT(&sc->sc_tx_active);
- STAILQ_INIT(&sc->sc_tx_inactive);
- STAILQ_INIT(&sc->sc_tx_pending);
-
uath_free_data_list(sc, sc->sc_tx, UATH_TX_DATA_LIST_COUNT,
0 /* no mbufs */);
}
@@ -1543,7 +1553,15 @@ uath_ioctl(struct ifnet *ifp, u_long cmd
{
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
- int error = 0, startall = 0;
+ struct uath_softc *sc = ifp->if_softc;
+ int error;
+ int startall = 0;
+
+ UATH_LOCK(sc);
+ error = (sc->sc_flags & UATH_FLAG_INVALID) ? ENXIO : 0;
+ UATH_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
Modified: head/sys/dev/usb/wlan/if_upgt.c
==============================================================================
--- head/sys/dev/usb/wlan/if_upgt.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_upgt.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -466,7 +466,14 @@ upgt_ioctl(struct ifnet *ifp, u_long cmd
struct upgt_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
- int error = 0, startall = 0;
+ int error;
+ int startall = 0;
+
+ UPGT_LOCK(sc);
+ error = (sc->sc_flags & UPGT_FLAG_DETACHED) ? ENXIO : 0;
+ UPGT_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
@@ -1976,7 +1983,6 @@ upgt_alloc_rx(struct upgt_softc *sc)
data->buf = ((uint8_t *)sc->sc_rx_dma_buf) + (i * MCLBYTES);
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
}
-
return (0);
}
@@ -1986,22 +1992,42 @@ upgt_detach(device_t dev)
struct upgt_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
+ unsigned int x;
- if (!device_is_attached(dev))
- return 0;
+ /*
+ * Prevent further allocations from RX/TX/CMD
+ * data lists and ioctls
+ */
+ UPGT_LOCK(sc);
+ sc->sc_flags |= UPGT_FLAG_DETACHED;
+
+ STAILQ_INIT(&sc->sc_tx_active);
+ STAILQ_INIT(&sc->sc_tx_inactive);
+ STAILQ_INIT(&sc->sc_tx_pending);
+
+ STAILQ_INIT(&sc->sc_rx_active);
+ STAILQ_INIT(&sc->sc_rx_inactive);
+ UPGT_UNLOCK(sc);
upgt_stop(sc);
callout_drain(&sc->sc_led_ch);
callout_drain(&sc->sc_watchdog_ch);
- ieee80211_ifdetach(ic);
-
- usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
+ /* drain USB transfers */
+ for (x = 0; x != UPGT_N_XFERS; x++)
+ usbd_transfer_drain(sc->sc_xfer[x]);
+ /* free data buffers */
+ UPGT_LOCK(sc);
upgt_free_rx(sc);
upgt_free_tx(sc);
+ UPGT_UNLOCK(sc);
+
+ /* free USB transfers and some data buffers */
+ usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
+ ieee80211_ifdetach(ic);
if_free(ifp);
mtx_destroy(&sc->sc_mtx);
@@ -2029,6 +2055,9 @@ upgt_free_tx(struct upgt_softc *sc)
for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
struct upgt_data *data = &sc->sc_tx_data[i];
+ if (data->ni != NULL)
+ ieee80211_free_node(data->ni);
+
data->buf = NULL;
data->ni = NULL;
}
Modified: head/sys/dev/usb/wlan/if_upgtvar.h
==============================================================================
--- head/sys/dev/usb/wlan/if_upgtvar.h Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_upgtvar.h Sun Feb 10 10:36:16 2013 (r246614)
@@ -429,6 +429,7 @@ struct upgt_softc {
int sc_flags;
#define UPGT_FLAG_FWLOADED (1 << 0)
#define UPGT_FLAG_INITDONE (1 << 1)
+#define UPGT_FLAG_DETACHED (1 << 2)
int sc_if_flags;
int sc_debug;
Modified: head/sys/dev/usb/wlan/if_ural.c
==============================================================================
--- head/sys/dev/usb/wlan/if_ural.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_ural.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -385,8 +385,7 @@ static device_method_t ural_methods[] =
DEVMETHOD(device_probe, ural_match),
DEVMETHOD(device_attach, ural_attach),
DEVMETHOD(device_detach, ural_detach),
-
- { 0, 0 }
+ DEVMETHOD_END
};
static driver_t ural_driver = {
@@ -528,6 +527,11 @@ ural_detach(device_t self)
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic;
+ /* prevent further ioctls */
+ RAL_LOCK(sc);
+ sc->sc_detached = 1;
+ RAL_UNLOCK(sc);
+
/* stop all USB transfers */
usbd_transfer_unsetup(sc->sc_xfer, URAL_N_TRANSFER);
@@ -1371,7 +1375,14 @@ ural_ioctl(struct ifnet *ifp, u_long cmd
struct ural_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
- int error = 0, startall = 0;
+ int error;
+ int startall = 0;
+
+ RAL_LOCK(sc);
+ error = sc->sc_detached ? ENXIO : 0;
+ RAL_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
Modified: head/sys/dev/usb/wlan/if_uralvar.h
==============================================================================
--- head/sys/dev/usb/wlan/if_uralvar.h Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_uralvar.h Sun Feb 10 10:36:16 2013 (r246614)
@@ -110,6 +110,7 @@ struct ural_softc {
uint32_t rf_regs[4];
uint8_t txpow[14];
uint8_t sc_bssid[6];
+ uint8_t sc_detached;
struct {
uint8_t val;
Modified: head/sys/dev/usb/wlan/if_urtw.c
==============================================================================
--- head/sys/dev/usb/wlan/if_urtw.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_urtw.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -651,8 +651,8 @@ static struct ieee80211vap *urtw_vap_cre
const uint8_t [IEEE80211_ADDR_LEN]);
static void urtw_vap_delete(struct ieee80211vap *);
static void urtw_init(void *);
-static void urtw_stop(struct ifnet *, int);
-static void urtw_stop_locked(struct ifnet *, int);
+static void urtw_stop(struct ifnet *);
+static void urtw_stop_locked(struct ifnet *);
static int urtw_ioctl(struct ifnet *, u_long, caddr_t);
static void urtw_start(struct ifnet *);
static int urtw_alloc_rx_data_list(struct urtw_softc *);
@@ -933,42 +933,63 @@ urtw_detach(device_t dev)
struct urtw_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
+ unsigned int x;
+ unsigned int n_xfers;
- if (!device_is_attached(dev))
- return (0);
+ /* Prevent further ioctls */
+ URTW_LOCK(sc);
+ sc->sc_flags |= URTW_DETACHED;
+ URTW_UNLOCK(sc);
+
+ urtw_stop(ifp);
- urtw_stop(ifp, 1);
ieee80211_draintask(ic, &sc->sc_updateslot_task);
ieee80211_draintask(ic, &sc->sc_led_task);
usb_callout_drain(&sc->sc_led_ch);
callout_drain(&sc->sc_watchdog_ch);
- ieee80211_ifdetach(ic);
+ n_xfers = (sc->sc_flags & URTW_RTL8187B) ?
+ URTW_8187B_N_XFERS : URTW_8187L_N_XFERS;
- usbd_transfer_unsetup(sc->sc_xfer, (sc->sc_flags & URTW_RTL8187B) ?
- URTW_8187B_N_XFERS : URTW_8187L_N_XFERS);
+ /* prevent further allocations from RX/TX data lists */
+ URTW_LOCK(sc);
+ STAILQ_INIT(&sc->sc_tx_active);
+ STAILQ_INIT(&sc->sc_tx_inactive);
+ STAILQ_INIT(&sc->sc_tx_pending);
+ STAILQ_INIT(&sc->sc_rx_active);
+ STAILQ_INIT(&sc->sc_rx_inactive);
+ URTW_UNLOCK(sc);
+
+ /* drain USB transfers */
+ for (x = 0; x != n_xfers; x++)
+ usbd_transfer_drain(sc->sc_xfer[x]);
+
+ /* free data buffers */
+ URTW_LOCK(sc);
urtw_free_tx_data_list(sc);
urtw_free_rx_data_list(sc);
+ URTW_UNLOCK(sc);
+
+ /* free USB transfers and some data buffers */
+ usbd_transfer_unsetup(sc->sc_xfer, n_xfers);
+ ieee80211_ifdetach(ic);
if_free(ifp);
mtx_destroy(&sc->sc_mtx);
-
return (0);
}
static void
urtw_free_tx_data_list(struct urtw_softc *sc)
{
-
urtw_free_data_list(sc, sc->sc_tx, URTW_TX_DATA_LIST_COUNT, 0);
}
static void
urtw_free_rx_data_list(struct urtw_softc *sc)
{
-
urtw_free_data_list(sc, sc->sc_rx, URTW_RX_DATA_LIST_COUNT, 1);
}
@@ -1046,7 +1067,7 @@ urtw_init_locked(void *arg)
usb_error_t error;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
- urtw_stop_locked(ifp, 0);
+ urtw_stop_locked(ifp);
error = (sc->sc_flags & URTW_RTL8187B) ? urtw_adapter_start_b(sc) :
urtw_adapter_start(sc);
@@ -1309,13 +1330,12 @@ urtw_do_request(struct urtw_softc *sc,
}
static void
-urtw_stop_locked(struct ifnet *ifp, int disable)
+urtw_stop_locked(struct ifnet *ifp)
{
struct urtw_softc *sc = ifp->if_softc;
uint8_t data8;
usb_error_t error;
- (void)disable;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
error = urtw_intr_disable(sc);
@@ -1349,12 +1369,12 @@ fail:
}
static void
-urtw_stop(struct ifnet *ifp, int disable)
+urtw_stop(struct ifnet *ifp)
{
struct urtw_softc *sc = ifp->if_softc;
URTW_LOCK(sc);
- urtw_stop_locked(ifp, disable);
+ urtw_stop_locked(ifp);
URTW_UNLOCK(sc);
}
@@ -1379,7 +1399,14 @@ urtw_ioctl(struct ifnet *ifp, u_long cmd
struct urtw_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
- int error = 0, startall = 0;
+ int error;
+ int startall = 0;
+
+ URTW_LOCK(sc);
+ error = (sc->sc_flags & URTW_DETACHED) ? ENXIO : 0;
+ URTW_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
@@ -1394,7 +1421,7 @@ urtw_ioctl(struct ifnet *ifp, u_long cmd
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
- urtw_stop(ifp, 1);
+ urtw_stop(ifp);
}
sc->sc_if_flags = ifp->if_flags;
if (startall)
@@ -1410,7 +1437,6 @@ urtw_ioctl(struct ifnet *ifp, u_long cmd
error = EINVAL;
break;
}
-
return (error);
}
@@ -1991,9 +2017,11 @@ urtw_update_msr(struct urtw_softc *sc)
data |= URTW_MSR_LINK_HOSTAP;
break;
default:
- panic("unsupported operation mode 0x%x\n",
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported operation mode 0x%x\n",
ic->ic_opmode);
- /* never reach */
+ error = USB_ERR_INVAL;
+ goto fail;
}
} else
data |= URTW_MSR_LINK_NONE;
@@ -2424,8 +2452,10 @@ urtw_get_rfchip(struct urtw_softc *sc)
sc->sc_rf_stop = urtw_8225_rf_stop;
break;
default:
- panic("unsupported RF chip %d\n", data & 0xff);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported RF chip %d\n", data & 0xff);
+ error = USB_ERR_INVAL;
+ goto fail;
}
device_printf(sc->sc_dev, "%s rf %s hwrev %s\n",
@@ -3605,8 +3635,10 @@ urtw_led_ctl(struct urtw_softc *sc, int
error = urtw_led_mode3(sc, mode);
break;
default:
- panic("unsupported LED mode %d\n", sc->sc_strategy);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported LED mode %d\n", sc->sc_strategy);
+ error = USB_ERR_INVAL;
+ break;
}
return (error);
@@ -3631,8 +3663,9 @@ urtw_led_mode0(struct urtw_softc *sc, in
sc->sc_gpio_ledstate = URTW_LED_ON;
break;
default:
- panic("unsupported LED mode 0x%x", mode);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported LED mode 0x%x", mode);
+ return (USB_ERR_INVAL);
}
switch (sc->sc_gpio_ledstate) {
@@ -3655,8 +3688,9 @@ urtw_led_mode0(struct urtw_softc *sc, in
urtw_led_off(sc, URTW_LED_GPIO);
break;
default:
- panic("unknown LED status 0x%x", sc->sc_gpio_ledstate);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unknown LED status 0x%x", sc->sc_gpio_ledstate);
+ return (USB_ERR_INVAL);
}
return (0);
}
@@ -3664,21 +3698,18 @@ urtw_led_mode0(struct urtw_softc *sc, in
static usb_error_t
urtw_led_mode1(struct urtw_softc *sc, int mode)
{
-
return (USB_ERR_INVAL);
}
static usb_error_t
urtw_led_mode2(struct urtw_softc *sc, int mode)
{
-
return (USB_ERR_INVAL);
}
static usb_error_t
urtw_led_mode3(struct urtw_softc *sc, int mode)
{
-
return (USB_ERR_INVAL);
}
@@ -3694,13 +3725,17 @@ urtw_led_on(struct urtw_softc *sc, int t
urtw_write8_m(sc, URTW_GP_ENABLE, 0x00);
break;
default:
- panic("unsupported LED PIN type 0x%x",
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported LED PIN type 0x%x",
sc->sc_gpio_ledpin);
- /* never reach */
+ error = USB_ERR_INVAL;
+ goto fail;
}
} else {
- panic("unsupported LED type 0x%x", type);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported LED type 0x%x", type);
+ error = USB_ERR_INVAL;
+ goto fail;
}
sc->sc_gpio_ledon = 1;
@@ -3721,13 +3756,17 @@ urtw_led_off(struct urtw_softc *sc, int
URTW_GP_ENABLE, URTW_GP_ENABLE_DATA_MAGIC1);
break;
default:
- panic("unsupported LED PIN type 0x%x",
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported LED PIN type 0x%x",
sc->sc_gpio_ledpin);
- /* never reach */
+ error = USB_ERR_INVAL;
+ goto fail;
}
} else {
- panic("unsupported LED type 0x%x", type);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unsupported LED type 0x%x", type);
+ error = USB_ERR_INVAL;
+ goto fail;
}
sc->sc_gpio_ledon = 0;
@@ -3751,8 +3790,12 @@ urtw_ledtask(void *arg, int pending)
{
struct urtw_softc *sc = arg;
- if (sc->sc_strategy != URTW_SW_LED_MODE0)
- panic("could not process a LED strategy 0x%x", sc->sc_strategy);
+ if (sc->sc_strategy != URTW_SW_LED_MODE0) {
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "could not process a LED strategy 0x%x",
+ sc->sc_strategy);
+ return;
+ }
URTW_LOCK(sc);
urtw_led_blink(sc);
@@ -3799,8 +3842,10 @@ urtw_led_blink(struct urtw_softc *sc)
usb_callout_reset(&sc->sc_led_ch, hz, urtw_led_ch, sc);
break;
default:
- panic("unknown LED status 0x%x", sc->sc_gpio_ledstate);
- /* never reach */
+ DPRINTF(sc, URTW_DEBUG_STATE,
+ "unknown LED status 0x%x",
+ sc->sc_gpio_ledstate);
+ return (USB_ERR_INVAL);
}
return (0);
}
Modified: head/sys/dev/usb/wlan/if_urtwvar.h
==============================================================================
--- head/sys/dev/usb/wlan/if_urtwvar.h Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_urtwvar.h Sun Feb 10 10:36:16 2013 (r246614)
@@ -107,6 +107,7 @@ struct urtw_softc {
#define URTW_RTL8187B_REV_B (1 << 3)
#define URTW_RTL8187B_REV_D (1 << 4)
#define URTW_RTL8187B_REV_E (1 << 5)
+#define URTW_DETACHED (1 << 6)
enum ieee80211_state sc_state;
int sc_epromtype;
Modified: head/sys/dev/usb/wlan/if_zyd.c
==============================================================================
--- head/sys/dev/usb/wlan/if_zyd.c Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_zyd.c Sun Feb 10 10:36:16 2013 (r246614)
@@ -438,12 +438,29 @@ zyd_detach(device_t dev)
struct zyd_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic;
+ unsigned int x;
- /* stop all USB transfers */
- usbd_transfer_unsetup(sc->sc_xfer, ZYD_N_TRANSFER);
+ /*
+ * Prevent further allocations from RX/TX data
+ * lists and ioctls:
+ */
+ ZYD_LOCK(sc);
+ sc->sc_flags |= ZYD_FLAG_DETACHED;
+ STAILQ_INIT(&sc->tx_q);
+ STAILQ_INIT(&sc->tx_free);
+ ZYD_UNLOCK(sc);
+
+ /* drain USB transfers */
+ for (x = 0; x != ZYD_N_TRANSFER; x++)
+ usbd_transfer_drain(sc->sc_xfer[x]);
/* free TX list, if any */
+ ZYD_LOCK(sc);
zyd_unsetup_tx_list(sc);
+ ZYD_UNLOCK(sc);
+
+ /* free USB transfers and some data buffers */
+ usbd_transfer_unsetup(sc->sc_xfer, ZYD_N_TRANSFER);
if (ifp) {
ic = ifp->if_l2com;
@@ -2637,7 +2654,14 @@ zyd_ioctl(struct ifnet *ifp, u_long cmd,
struct zyd_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
- int error = 0, startall = 0;
+ int error;
+ int startall = 0;
+
+ ZYD_LOCK(sc);
+ error = (sc->sc_flags & ZYD_FLAG_DETACHED) ? ENXIO : 0;
+ ZYD_UNLOCK(sc);
+ if (error)
+ return (error);
switch (cmd) {
case SIOCSIFFLAGS:
@@ -2928,8 +2952,7 @@ static device_method_t zyd_methods[] = {
DEVMETHOD(device_probe, zyd_match),
DEVMETHOD(device_attach, zyd_attach),
DEVMETHOD(device_detach, zyd_detach),
-
- { 0, 0 }
+ DEVMETHOD_END
};
static driver_t zyd_driver = {
Modified: head/sys/dev/usb/wlan/if_zydreg.h
==============================================================================
--- head/sys/dev/usb/wlan/if_zydreg.h Sun Feb 10 10:17:41 2013 (r246613)
+++ head/sys/dev/usb/wlan/if_zydreg.h Sun Feb 10 10:36:16 2013 (r246614)
@@ -1259,6 +1259,7 @@ struct zyd_softc {
#define ZYD_FLAG_FWLOADED (1 << 0)
#define ZYD_FLAG_INITONCE (1 << 1)
#define ZYD_FLAG_INITDONE (1 << 2)
+#define ZYD_FLAG_DETACHED (1 << 3)
struct zyd_rf sc_rf;
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