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powerpc: Remove all usages of NO_IRQ

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NO_IRQ has been == 0 on powerpc for just over ten years (since commit
0ebfff1491 ("[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>
This commit is contained in:
Michael Ellerman
2016-09-06 21:53:24 +10:00
parent 9d82fd2fae
commit ef24ba7091
80 changed files with 204 additions and 200 deletions
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4
drivers/ps3/ps3-vuart.c
View File

@@ -958,7 +958,7 @@ static int ps3_vuart_bus_interrupt_get(void)
fail_request_irq:
ps3_vuart_irq_destroy(vuart_bus_priv.virq);
vuart_bus_priv.virq = NO_IRQ;
vuart_bus_priv.virq = 0;
fail_alloc_irq:
kfree(vuart_bus_priv.bmp);
vuart_bus_priv.bmp = NULL;
@@ -982,7 +982,7 @@ static int ps3_vuart_bus_interrupt_put(void)
free_irq(vuart_bus_priv.virq, &vuart_bus_priv);
ps3_vuart_irq_destroy(vuart_bus_priv.virq);
vuart_bus_priv.virq = NO_IRQ;
vuart_bus_priv.virq = 0;
kfree(vuart_bus_priv.bmp);
vuart_bus_priv.bmp = NULL;