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author | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-06 21:53:24 +1000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-20 20:57:12 +1000 |
commit | ef24ba7091517d2bbf9ba2cb4256c0dccd51d248 (patch) | |
tree | f988a2b82eab1ec83aa2a08e34190a9a32b4035f /arch/powerpc/kernel/ibmebus.c | |
parent | 9d82fd2fae925efdf546cc25afdc664a2e3a2d9f (diff) | |
download | linux-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.tar.gz linux-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.tar.bz2 linux-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.zip |
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 'arch/powerpc/kernel/ibmebus.c')
-rw-r--r-- | arch/powerpc/kernel/ibmebus.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c index c1ca9282f4a0..6ca9a2ffaac7 100644 --- a/arch/powerpc/kernel/ibmebus.c +++ b/arch/powerpc/kernel/ibmebus.c @@ -227,7 +227,7 @@ int ibmebus_request_irq(u32 ist, irq_handler_t handler, { unsigned int irq = irq_create_mapping(NULL, ist); - if (irq == NO_IRQ) + if (!irq) return -EINVAL; return request_irq(irq, handler, irq_flags, devname, dev_id); |