From 63a7b17e3fe8ef6217daa7be35e373c7807275f8 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Thu, 6 Nov 2014 22:20:32 +0800 Subject: PCI/MSI: Simplify PCI MSI code by initializing msi_desc.nvec_used earlier Simplify PCI MSI code by initializing msi_desc.nvec_used and msi_desc.msi_attrib.multiple when creating MSI descriptors. Also remove redundant checks in IRQ remapping drivers, PCI MSI core already guarantees these. Signed-off-by: Jiang Liu Acked-by: Bjorn Helgaas Cc: Bjorn Helgaas Cc: Grant Likely Cc: Marc Zyngier Cc: Yingjoe Chen Cc: Yijing Wang Signed-off-by: Thomas Gleixner --- drivers/iommu/irq_remapping.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers/iommu') diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index 74a1767c89b5..2c3f5ad01098 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -56,19 +56,13 @@ static int do_setup_msi_irqs(struct pci_dev *dev, int nvec) unsigned int irq; struct msi_desc *msidesc; - 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); irq = irq_alloc_hwirqs(nvec, dev_to_node(&dev->dev)); if (irq == 0) return -ENOSPC; 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_pow2); @@ -96,8 +90,6 @@ 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; } -- cgit v1.2.3