From ef24ba7091517d2bbf9ba2cb4256c0dccd51d248 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 6 Sep 2016 21:53:24 +1000 Subject: powerpc: Remove all usages of NO_IRQ NO_IRQ has been == 0 on powerpc for just over ten years (since commit 0ebfff1491ef ("[POWERPC] Add new interrupt mapping core and change platforms to use it")). It's also 0 on most other arches. Although it's fairly harmless, every now and then it causes confusion when a driver is built on powerpc and another arch which doesn't define NO_IRQ. There's at least 6 definitions of NO_IRQ in drivers/, at least some of which are to work around that problem. So we'd like to remove it. This is fairly trivial in the arch code, we just convert: if (irq == NO_IRQ) to if (!irq) if (irq != NO_IRQ) to if (irq) irq = NO_IRQ; to irq = 0; return NO_IRQ; to return 0; And a few other odd cases as well. At least for now we keep the #define NO_IRQ, because there is driver code that uses NO_IRQ and the fixes to remove those will go via other trees. Note we also change some occurrences in PPC sound drivers, drivers/ps3, and drivers/macintosh. Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/pci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/platforms/powernv/pci.c') diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index a21d831c1114..d6a4a61ede3d 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -186,7 +186,7 @@ int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) return -ENOSPC; } virq = irq_create_mapping(NULL, phb->msi_base + hwirq); - if (virq == NO_IRQ) { + if (!virq) { pr_warn("%s: Failed to map MSI to linux irq\n", pci_name(pdev)); msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq, 1); @@ -217,7 +217,7 @@ void pnv_teardown_msi_irqs(struct pci_dev *pdev) return; for_each_pci_msi_entry(entry, pdev) { - if (entry->irq == NO_IRQ) + if (!entry->irq) continue; hwirq = virq_to_hw(entry->irq); irq_set_msi_desc(entry->irq, NULL); -- cgit