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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/sysdev/ipic.c | |
parent | 9d82fd2fae925efdf546cc25afdc664a2e3a2d9f (diff) | |
download | op-kernel-dev-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.zip op-kernel-dev-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.tar.gz |
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/sysdev/ipic.c')
-rw-r--r-- | arch/powerpc/sysdev/ipic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c index f76ee39..f267ee0 100644 --- a/arch/powerpc/sysdev/ipic.c +++ b/arch/powerpc/sysdev/ipic.c @@ -853,7 +853,7 @@ void ipic_clear_mcp_status(u32 mask) ipic_write(primary_ipic->regs, IPIC_SERMR, mask); } -/* Return an interrupt vector or NO_IRQ if no interrupt is pending. */ +/* Return an interrupt vector or 0 if no interrupt is pending. */ unsigned int ipic_get_irq(void) { int irq; @@ -864,7 +864,7 @@ unsigned int ipic_get_irq(void) irq = ipic_read(primary_ipic->regs, IPIC_SIVCR) & IPIC_SIVCR_VECTOR_MASK; if (irq == 0) /* 0 --> no irq is pending */ - return NO_IRQ; + return 0; return irq_linear_revmap(primary_ipic->irqhost, irq); } |