From 7297824581755593535fc97d2c8b6c47e2dc2db6 Mon Sep 17 00:00:00 2001 From: Eric Moore Date: Wed, 7 Feb 2007 16:51:40 -0700 Subject: [SCSI] fusion: fix domain validation loops After host reset, the device are programmed to default asyn narrow nego. We need to reprogram the parameter back to previous values. If the host reset is called as a result of spi_dv_device() commands timing out, its possible to get into an infinite loop of dv to host reset. This will prevent that case, as we merely program old values. If host reset is called outside context of domain validation, then we can call spi_dv_device. Signed-off-by: Eric Moore Signed-off-by: James Bottomley --- drivers/message/fusion/mptspi.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) (limited to 'drivers/message/fusion/mptspi.c') diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c index b08416f84ed..d75f7ffbb02 100644 --- a/drivers/message/fusion/mptspi.c +++ b/drivers/message/fusion/mptspi.c @@ -676,7 +676,9 @@ static void mptspi_dv_device(struct _MPT_SCSI_HOST *hd, return; } + hd->spi_pending |= (1 << sdev->id); spi_dv_device(sdev); + hd->spi_pending &= ~(1 << sdev->id); if (sdev->channel == 1 && mptscsih_quiesce_raid(hd, 0, vtarget->channel, vtarget->id) < 0) @@ -1202,11 +1204,27 @@ mptspi_dv_renegotiate_work(struct work_struct *work) container_of(work, struct work_queue_wrapper, work); struct _MPT_SCSI_HOST *hd = wqw->hd; struct scsi_device *sdev; + struct scsi_target *starget; + struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1; + u32 nego; kfree(wqw); - shost_for_each_device(sdev, hd->ioc->sh) - mptspi_dv_device(hd, sdev); + if (hd->spi_pending) { + shost_for_each_device(sdev, hd->ioc->sh) { + if (hd->spi_pending & (1 << sdev->id)) + continue; + starget = scsi_target(sdev); + nego = mptspi_getRP(starget); + pg1.RequestedParameters = cpu_to_le32(nego); + pg1.Reserved = 0; + pg1.Configuration = 0; + mptspi_write_spi_device_pg1(starget, &pg1); + } + } else { + shost_for_each_device(sdev, hd->ioc->sh) + mptspi_dv_device(hd, sdev); + } } static void @@ -1452,6 +1470,7 @@ mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id) init_waitqueue_head(&hd->scandv_waitq); hd->scandv_wait_done = 0; hd->last_queue_full = 0; + hd->spi_pending = 0; /* Some versions of the firmware don't support page 0; without * that we can't get the parameters */ -- cgit v1.2.3