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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-10 23:10:55 -0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-12 09:18:11 -0400
commit27898988174bb211fd962ea73b9c6dc09f888705 (patch)
treee07c5156a522f185eae2d17285e26731a2765387 /drivers/message/fusion/mptbase.c
parent0ce3a7e5bd305e96c924fab1e3126480c665f017 (diff)
[SCSI] fusion: default MSI to disabled for SPI and FC controllers
There's a fault on the FC controllers that makes them not respond correctly to MSI. The SPI controllers are fine, but are likely to be onboard on older motherboards which don't handle MSI correctly, so default both these cases to disabled. Enable by setting the module parameter mpt_msi_enable=1. For the SAS case, enable MSI by default, but it can be disabled by setting the module parameter mpt_msi_enable=0. Cc: "Prakash, Sathya" <sathya.prakash@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/message/fusion/mptbase.c')
-rw-r--r--drivers/message/fusion/mptbase.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index db3c892f87fb..d40d6d15ae20 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -1686,9 +1686,14 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
1686 ioc->bus_type = SAS; 1686 ioc->bus_type = SAS;
1687 } 1687 }
1688 1688
1689 if (ioc->bus_type == SAS && mpt_msi_enable == -1) 1689 if (mpt_msi_enable == -1) {
1690 ioc->msi_enable = 1; 1690 /* Enable on SAS, disable on FC and SPI */
1691 else 1691 if (ioc->bus_type == SAS)
1692 ioc->msi_enable = 1;
1693 else
1694 ioc->msi_enable = 0;
1695 } else
1696 /* follow flag: 0 - disable; 1 - enable */
1692 ioc->msi_enable = mpt_msi_enable; 1697 ioc->msi_enable = mpt_msi_enable;
1693 1698
1694 if (ioc->errata_flag_1064) 1699 if (ioc->errata_flag_1064)