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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-09 23:23:30 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-09 23:23:30 +0300 |
| commit | cb2113cb983f0aadfb63668fe97f9780478313d7 (patch) | |
| tree | 08be1e2c9fe4eb309c5f0c8b515706cc274e4280 /arch/x86/pci | |
| parent | ea6200e84182989a3cce9687cf79a23ac44ec4db (diff) | |
| parent | d825adb48cf9bf9e3f5cb1d927e2827f8c2abee4 (diff) | |
| download | linux-cb2113cb983f0aadfb63668fe97f9780478313d7.tar.xz | |
Merge tag 'for-linus-4.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix and cleanup from Juergen Gross:
"This contains one fix for MSIX handling under Xen and a trivial
cleanup patch"
* tag 'for-linus-4.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xenbus: Remove duplicate inclusion of linux/init.h
xen: do not re-use pirq number cached in pci device msi msg data
Diffstat (limited to 'arch/x86/pci')
| -rw-r--r-- | arch/x86/pci/xen.c | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index e1fb269c87af..292ab0364a89 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -234,23 +234,14 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) return 1; for_each_pci_msi_entry(msidesc, dev) { - __pci_read_msi_msg(msidesc, &msg); - pirq = MSI_ADDR_EXT_DEST_ID(msg.address_hi) | - ((msg.address_lo >> MSI_ADDR_DEST_ID_SHIFT) & 0xff); - if (msg.data != XEN_PIRQ_MSI_DATA || - xen_irq_from_pirq(pirq) < 0) { - pirq = xen_allocate_pirq_msi(dev, msidesc); - if (pirq < 0) { - irq = -ENODEV; - goto error; - } - xen_msi_compose_msg(dev, pirq, &msg); - __pci_write_msi_msg(msidesc, &msg); - dev_dbg(&dev->dev, "xen: msi bound to pirq=%d\n", pirq); - } else { - dev_dbg(&dev->dev, - "xen: msi already bound to pirq=%d\n", pirq); + pirq = xen_allocate_pirq_msi(dev, msidesc); + if (pirq < 0) { + irq = -ENODEV; + goto error; } + xen_msi_compose_msg(dev, pirq, &msg); + __pci_write_msi_msg(msidesc, &msg); + dev_dbg(&dev->dev, "xen: msi bound to pirq=%d\n", pirq); irq = xen_bind_pirq_msi_to_irq(dev, msidesc, pirq, (type == PCI_CAP_ID_MSI) ? nvec : 1, (type == PCI_CAP_ID_MSIX) ? |