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operations before returning. Point the bus at a dummy cam_sim structure so that any CCBs will complete immediately with a CAM_DEV_NOT_THERE status, and ensure that any xpt_schedule() calls on the bus's devices will immediately call the peripheral's periph_start() routine. Also repeat the async messages because devices that were part of the way through being probed may appear after the original AC_LOST_DEVICE was sent, and would otherwise never go away. These changes make it possible to deregister a bus and free the SIM at most stages during bus probing without the usual crashes in camisr(). In particular, plugging in a umass device and then unplugging it as soon as the first probe messages appeared would almost always result in a crash. Now the device just goes away with a few CAM errors and all references to the CAM bus, target and device are dropped correctly. |
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|---|---|---|
| .. | ||
| scsi | ||
| cam_ccb.h | ||
| cam_debug.h | ||
| cam_periph.c | ||
| cam_periph.h | ||
| cam_queue.c | ||
| cam_queue.h | ||
| cam_sim.c | ||
| cam_sim.h | ||
| cam_xpt_periph.h | ||
| cam_xpt_sim.h | ||
| cam_xpt.c | ||
| cam_xpt.h | ||
| cam.c | ||
| cam.h | ||