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| author | Yinghai Lu <yhlu.kernel.send@gmail.com> | 2008-04-23 21:58:09 (GMT) |
|---|---|---|
| committer | Jesse Barnes <jbarnes@hobbes.lan> | 2008-04-29 16:12:51 (GMT) |
| commit | d52877c7b1afb8c37ebe17e2005040b79cb618b0 (patch) | |
| tree | b5cc4252cad0d7f22a6b63e50d1ec46a9a495773 /drivers | |
| parent | 8e149e09f91098fd72bf9ac5b4a77a693abf721e (diff) | |
| download | linux-d52877c7b1afb8c37ebe17e2005040b79cb618b0.tar.xz | |
pci/irq: let pci_device_shutdown to call pci_msi_shutdown v2
[PATCH 2/2] pci/irq: let pci_device_shutdown to call pci_msi_shutdown v2
this change
| commit 23a274c8a5adafc74a66f16988776fc7dd6f6e51
| Author: Prakash, Sathya <sathya.prakash@lsi.com>
| Date: Fri Mar 7 15:53:21 2008 +0530
|
| [SCSI] mpt fusion: Enable MSI by default for SAS controllers
|
| This patch modifies the driver to enable MSI by default for all SAS chips.
|
| Signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
| Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
Causes the kexec of a RHEL 5.1 kernel to fail.
root casue: the rhel 5.1 kernel still uses INTx emulation. and
mptscsih_shutdown doesn't call pci_disable_msi to reenable INTx on kexec path
So call pci_msi_shutdown in the shutdown path to do the same thing to msix
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@hobbes.lan>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/msi.c | 35 | ||||
| -rw-r--r-- | drivers/pci/pci-driver.c | 2 |
2 files changed, 28 insertions, 9 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index e3a05cc..8c61304c 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -571,10 +571,9 @@ int pci_enable_msi(struct pci_dev* dev) } EXPORT_SYMBOL(pci_enable_msi); -void pci_disable_msi(struct pci_dev* dev) +void pci_msi_shutdown(struct pci_dev* dev) { struct msi_desc *entry; - int default_irq; if (!pci_msi_enable || !dev || !dev->msi_enabled) return; @@ -590,15 +589,26 @@ void pci_disable_msi(struct pci_dev* dev) u32 mask = entry->msi_attrib.maskbits_mask; msi_set_mask_bits(dev->irq, mask, ~mask); } - if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI) { + if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI) return; - } - - default_irq = entry->msi_attrib.default_irq; - msi_free_irqs(dev); /* Restore dev->irq to its default pin-assertion irq */ - dev->irq = default_irq; + dev->irq = entry->msi_attrib.default_irq; +} +void pci_disable_msi(struct pci_dev* dev) +{ + struct msi_desc *entry; + + if (!pci_msi_enable || !dev || !dev->msi_enabled) + return; + + pci_msi_shutdown(dev); + + entry = list_entry(dev->msi_list.next, struct msi_desc, list); + if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI) + return; + + msi_free_irqs(dev); } EXPORT_SYMBOL(pci_disable_msi); @@ -691,7 +701,7 @@ static void msix_free_all_irqs(struct pci_dev *dev) msi_free_irqs(dev); } -void pci_disable_msix(struct pci_dev* dev) +void pci_msix_shutdown(struct pci_dev* dev) { if (!pci_msi_enable || !dev || !dev->msix_enabled) return; @@ -699,6 +709,13 @@ void pci_disable_msix(struct pci_dev* dev) msix_set_enable(dev, 0); pci_intx_for_msi(dev, 1); dev->msix_enabled = 0; +} +void pci_disable_msix(struct pci_dev* dev) +{ + if (!pci_msi_enable || !dev || !dev->msix_enabled) + return; + + pci_msix_shutdown(dev); msix_free_all_irqs(dev); } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index e8d94fa..72cf61e 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -360,6 +360,8 @@ static void pci_device_shutdown(struct device *dev) if (drv && drv->shutdown) drv->shutdown(pci_dev); + pci_msi_shutdown(pci_dev); + pci_msix_shutdown(pci_dev); } /** |