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/sysdev/axonram.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/powerpc/sysdev/axonram.c') diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index 9144204442eb..ada29eaed6e2 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -240,7 +240,7 @@ static int axon_ram_probe(struct platform_device *device) device_add_disk(&device->dev, bank->disk); bank->irq_id = irq_of_parse_and_map(device->dev.of_node, 0); - if (bank->irq_id == NO_IRQ) { + if (!bank->irq_id) { dev_err(&device->dev, "Cannot access ECC interrupt ID\n"); rc = -EFAULT; goto failed; @@ -250,7 +250,7 @@ static int axon_ram_probe(struct platform_device *device) AXON_RAM_IRQ_FLAGS, bank->disk->disk_name, device); if (rc != 0) { dev_err(&device->dev, "Cannot register ECC interrupt handler\n"); - bank->irq_id = NO_IRQ; + bank->irq_id = 0; rc = -EFAULT; goto failed; } @@ -268,7 +268,7 @@ static int axon_ram_probe(struct platform_device *device) failed: if (bank != NULL) { - if (bank->irq_id != NO_IRQ) + if (bank->irq_id) free_irq(bank->irq_id, device); if (bank->disk != NULL) { if (bank->disk->major > 0) -- cgit v1.2.3-59-g8ed1b