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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-07-12 14:34:42 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-07-12 14:34:42 +0400 |
| commit | f2006e27396f55276f24434f56e208d86e7f9908 (patch) | |
| tree | 71896db916d33888b4286f80117d3cac0da40e6d /drivers/iommu/irq_remapping.c | |
| parent | e399eb56a6110e13f97e644658648602e2b08de7 (diff) | |
| parent | 9903883f1dd6e86f286b7bfa6e4b423f98c1cd9e (diff) | |
| download | linux-f2006e27396f55276f24434f56e208d86e7f9908.tar.xz | |
Merge branch 'linus' into timers/urgent
Get upstream changes so we can apply fixes against them
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/iommu/irq_remapping.c')
| -rw-r--r-- | drivers/iommu/irq_remapping.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index dcfea4e39be7..39f81aeefcd6 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -51,26 +51,27 @@ static void irq_remapping_disable_io_apic(void) static int do_setup_msi_irqs(struct pci_dev *dev, int nvec) { - int node, ret, sub_handle, index = 0; + int node, ret, sub_handle, nvec_pow2, index = 0; unsigned int irq; struct msi_desc *msidesc; - nvec = __roundup_pow_of_two(nvec); - WARN_ON(!list_is_singular(&dev->msi_list)); msidesc = list_entry(dev->msi_list.next, struct msi_desc, list); WARN_ON(msidesc->irq); WARN_ON(msidesc->msi_attrib.multiple); + WARN_ON(msidesc->nvec_used); node = dev_to_node(&dev->dev); irq = __create_irqs(get_nr_irqs_gsi(), nvec, node); if (irq == 0) return -ENOSPC; - msidesc->msi_attrib.multiple = ilog2(nvec); + nvec_pow2 = __roundup_pow_of_two(nvec); + msidesc->nvec_used = nvec; + msidesc->msi_attrib.multiple = ilog2(nvec_pow2); for (sub_handle = 0; sub_handle < nvec; sub_handle++) { if (!sub_handle) { - index = msi_alloc_remapped_irq(dev, irq, nvec); + index = msi_alloc_remapped_irq(dev, irq, nvec_pow2); if (index < 0) { ret = index; goto error; @@ -95,6 +96,7 @@ error: * IRQs from tearing down again in default_teardown_msi_irqs() */ msidesc->irq = 0; + msidesc->nvec_used = 0; msidesc->msi_attrib.multiple = 0; return ret; |