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authorMichael Ellerman <mpe@ellerman.id.au>2016-09-06 14:53:24 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2016-09-20 13:57:12 +0300
commitef24ba7091517d2bbf9ba2cb4256c0dccd51d248 (patch)
treef988a2b82eab1ec83aa2a08e34190a9a32b4035f /drivers/macintosh/via-cuda.c
parent9d82fd2fae925efdf546cc25afdc664a2e3a2d9f (diff)
downloadlinux-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.tar.xz
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 <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/macintosh/via-cuda.c')
-rw-r--r--drivers/macintosh/via-cuda.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
index bad18130f125..2088e23a8002 100644
--- a/drivers/macintosh/via-cuda.c
+++ b/drivers/macintosh/via-cuda.c
@@ -209,7 +209,7 @@ static int __init via_cuda_start(void)
cuda_irq = IRQ_MAC_ADB;
#else
cuda_irq = irq_of_parse_and_map(vias, 0);
- if (cuda_irq == NO_IRQ) {
+ if (!cuda_irq) {
printk(KERN_ERR "via-cuda: can't map interrupts for %s\n",
vias->full_name);
return -ENODEV;