diff options
Diffstat (limited to 'sys/dev/usb/usb_dev.c')
| -rw-r--r-- | sys/dev/usb/usb_dev.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sys/dev/usb/usb_dev.c b/sys/dev/usb/usb_dev.c index e4471aee0b74a..396067309ac4d 100644 --- a/sys/dev/usb/usb_dev.c +++ b/sys/dev/usb/usb_dev.c @@ -86,9 +86,8 @@ static int usb_fifo_debug = 0; static SYSCTL_NODE(_hw_usb, OID_AUTO, dev, CTLFLAG_RW, 0, "USB device"); -SYSCTL_INT(_hw_usb_dev, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, +SYSCTL_INT(_hw_usb_dev, OID_AUTO, debug, CTLFLAG_RWTUN, &usb_fifo_debug, 0, "Debug Level"); -TUNABLE_INT("hw.usb.dev.debug", &usb_fifo_debug); #endif #if ((__FreeBSD_version >= 700001) || (__FreeBSD_version == 0) || \ @@ -1116,9 +1115,14 @@ usb_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int fflag, struct thread* usb_pause_mtx(NULL, hz / 128); - if (usb_ref_device(cpd, &refs, 1 /* need uref */)) { - err = ENXIO; - goto done; + while (usb_ref_device(cpd, &refs, 1 /* need uref */)) { + if (usb_ref_device(cpd, &refs, 0)) { + /* device no longer exits */ + err = ENXIO; + goto done; + } + usb_unref_device(cpd, &refs); + usb_pause_mtx(NULL, hz / 128); } } |