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Re-fetch the interface handle after setting the config number,

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because the previous interface handle gets freed when the config
number is set. This fixes a problem where memory could be accessed
after it was freed when the interface was ifconfig'd up.

Reviewed by:	n_hibma
This commit is contained in:
Ian Dowse 2002-07-15 14:37:36 +00:00
parent 19612036d9
commit 417d8f25fc
2 changed files with 4 additions and 1 deletions
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4
sys/dev/usb/if_kue.c
View File

@ -363,7 +363,9 @@ kue_setmulti(struct kue_softc *sc)
Static void Static void
kue_reset(struct kue_softc *sc) kue_reset(struct kue_softc *sc)
{ {
if (usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 0)) { if (usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 0) ||
usbd_device2interface_handle(sc->kue_udev, KUE_IFACE_IDX,
&sc->kue_iface)) {
printf("kue%d: getting interface handle failed\n", printf("kue%d: getting interface handle failed\n",
sc->kue_unit); sc->kue_unit);
} }

1
sys/dev/usb/if_kuereg.h
View File

@ -121,6 +121,7 @@ struct kue_ether_desc {
#define KUE_CTL_WRITE 0x02 #define KUE_CTL_WRITE 0x02
#define KUE_CONFIG_NO 1 #define KUE_CONFIG_NO 1
#define KUE_IFACE_IDX 0
/* /*
* The interrupt endpoint is currently unused * The interrupt endpoint is currently unused