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Make cam_periph_hold() behavior consistent: drop taken reference and

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return ENXIO if periph was invalidated while we were waiting for it.

MFC after:	1 week
This commit is contained in:
mav 2012-06-21 15:14:51 +00:00
parent a632fb1531
commit b8ac542c35
1 changed files with 4 additions and 0 deletions
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4
sys/cam/cam_periph.c
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@ -440,6 +440,10 @@ cam_periph_hold(struct cam_periph *periph, int priority)
cam_periph_release_locked(periph);
return (error);
}
if (periph->flags & CAM_PERIPH_INVALID) {
cam_periph_release_locked(periph);
return (ENXIO);
}
}
periph->flags |= CAM_PERIPH_LOCKED;