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 --- drivers/macintosh/macio_asic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/macintosh/macio_asic.c') diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c index b6819f0fc608..3f041b187033 100644 --- a/drivers/macintosh/macio_asic.c +++ b/drivers/macintosh/macio_asic.c @@ -236,7 +236,7 @@ static void macio_create_fixup_irq(struct macio_dev *dev, int index, unsigned int irq; irq = irq_create_mapping(NULL, line); - if (irq != NO_IRQ) { + if (!irq) { dev->interrupt[index].start = irq; dev->interrupt[index].flags = IORESOURCE_IRQ; dev->interrupt[index].name = dev_name(&dev->ofdev.dev); @@ -299,7 +299,7 @@ static void macio_setup_interrupts(struct macio_dev *dev) break; res = &dev->interrupt[j]; irq = irq_of_parse_and_map(np, i++); - if (irq == NO_IRQ) + if (!irq) break; res->start = irq; res->flags = IORESOURCE_IRQ; -- cgit v1.2.3