Justin, Your patch works for me. printk "Temporary Resource Shortage" has to go, or may be you can make it a debug option. Here is the cleaned up patch for 2.4.5-ac15 with TAILQ macros replaced with LIST macros. Thanks for the help. Bulent --- aic7xxx_linux.c.save Mon Jun 18 20:25:35 2001 +++ aic7xxx_linux.c Tue Jun 19 17:35:55 2001 @@ -1516,7 +1516,11 @@ } cmd->result = CAM_REQ_INPROG << 16; TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe); - ahc_linux_run_device_queue(ahc, dev); + if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) { + LIST_INSERT_HEAD(&ahc->platform_data->device_runq, dev, links); + dev->flags |= AHC_DEV_ON_RUN_LIST; + ahc_linux_run_device_queues(ahc); + } ahc_unlock(ahc, &flags); return (0); } @@ -1532,6 +1536,9 @@ struct ahc_tmode_tstate *tstate; uint16_t mask; + if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0) + panic("running device on run list"); + while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL && dev->openings > 0 && dev->qfrozen == 0) { @@ -1540,8 +1547,6 @@ * running is because the whole controller Q is frozen. */ if (ahc->platform_data->qfrozen != 0) { - if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0) - return; LIST_INSERT_HEAD(&ahc->platform_data->device_runq, dev, links); @@ -1552,8 +1557,6 @@ * Get an scb to use. */ if ((scb = ahc_get_scb(ahc)) == NULL) { - if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0) - panic("running device on run list"); LIST_INSERT_HEAD(&ahc->platform_data->device_runq, dev, links); dev->flags |= AHC_DEV_ON_RUN_LIST; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/