diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-06 21:53:24 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-20 20:57:12 +1000 |
| commit | ef24ba7091517d2bbf9ba2cb4256c0dccd51d248 (patch) | |
| tree | f988a2b82eab1ec83aa2a08e34190a9a32b4035f /arch/powerpc/platforms/chrp | |
| parent | 9d82fd2fae925efdf546cc25afdc664a2e3a2d9f (diff) | |
| download | blackbird-op-linux-ef24ba7091517d2bbf9ba2cb4256c0dccd51d248.tar.gz blackbird-op-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/platforms/chrp')
| -rw-r--r-- | arch/powerpc/platforms/chrp/setup.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index bfb300633dfe..0ce1b45f02a8 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -368,7 +368,7 @@ static void chrp_8259_cascade(struct irq_desc *desc) struct irq_chip *chip = irq_desc_get_chip(desc); unsigned int cascade_irq = i8259_irq(); - if (cascade_irq != NO_IRQ) + if (cascade_irq) generic_handle_irq(cascade_irq); chip->irq_eoi(&desc->irq_data); @@ -514,7 +514,7 @@ static void __init chrp_find_8259(void) } if (chrp_mpic != NULL) { cascade_irq = irq_of_parse_and_map(pic, 0); - if (cascade_irq == NO_IRQ) + if (!cascade_irq) printk(KERN_ERR "i8259: failed to map cascade irq\n"); else irq_set_chained_handler(cascade_irq, |
