[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>
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@ -1686,9 +1686,14 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
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ioc->bus_type = SAS;
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ioc->bus_type = SAS;
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}
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}
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if (ioc->bus_type == SAS && mpt_msi_enable == -1)
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if (mpt_msi_enable == -1) {
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ioc->msi_enable = 1;
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/* Enable on SAS, disable on FC and SPI */
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else
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if (ioc->bus_type == SAS)
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ioc->msi_enable = 1;
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else
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ioc->msi_enable = 0;
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} else
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/* follow flag: 0 - disable; 1 - enable */
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ioc->msi_enable = mpt_msi_enable;
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ioc->msi_enable = mpt_msi_enable;
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if (ioc->errata_flag_1064)
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if (ioc->errata_flag_1064)
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