diff options
Diffstat (limited to 'sys/dev/usb/usb_dev.c')
| -rw-r--r-- | sys/dev/usb/usb_dev.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/sys/dev/usb/usb_dev.c b/sys/dev/usb/usb_dev.c index c81b942..e4471ae 100644 --- a/sys/dev/usb/usb_dev.c +++ b/sys/dev/usb/usb_dev.c @@ -214,12 +214,13 @@ usb_ref_device(struct usb_cdev_privdata *cpd, DPRINTFN(2, "device is detached\n"); goto error; } - if (cpd->udev->refcount == USB_DEV_REF_MAX) { - DPRINTFN(2, "no dev ref\n"); - goto error; - } if (need_uref) { DPRINTFN(2, "ref udev - needed\n"); + + if (cpd->udev->refcount == USB_DEV_REF_MAX) { + DPRINTFN(2, "no dev ref\n"); + goto error; + } cpd->udev->refcount++; mtx_unlock(&usb_ref_lock); @@ -293,9 +294,8 @@ error: usbd_enum_unlock(cpd->udev); if (crd->is_uref) { - if (--(cpd->udev->refcount) == 0) { - cv_signal(&cpd->udev->ref_cv); - } + cpd->udev->refcount--; + cv_broadcast(&cpd->udev->ref_cv); } mtx_unlock(&usb_ref_lock); DPRINTFN(2, "fail\n"); @@ -361,10 +361,9 @@ usb_unref_device(struct usb_cdev_privdata *cpd, crd->is_write = 0; } if (crd->is_uref) { - if (--(cpd->udev->refcount) == 0) { - cv_signal(&cpd->udev->ref_cv); - } crd->is_uref = 0; + cpd->udev->refcount--; + cv_broadcast(&cpd->udev->ref_cv); } mtx_unlock(&usb_ref_lock); } |
