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alistair23-linux/arch/powerpc/platforms/8xx
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Michael Ellerman ef24ba7091 powerpc: Remove all usages of NO_IRQ 
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>
 		2016-09-20 20:57:12 +10:00
..
Kconfig powerpc: do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB 2016-06-08 09:54:53 +02:00
Makefile powerpc/8xx: remove obsolete mgsuvd board 2011-03-15 10:11:27 -05:00
adder875.c powerpc: Move 32-bit probe() machine to later in the boot process 2016-07-21 19:06:42 +10:00
ep88xc.c powerpc: Move 32-bit probe() machine to later in the boot process 2016-07-21 19:06:42 +10:00
m8xx_setup.c powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mpc8xx.h powerpc: Make ppc_md.{halt, restart} __noreturn 2016-07-14 21:12:06 +10:00
mpc86xads.h [POWERPC] 8xx: Convert mpc866ads to the new device binding. 2007-12-13 22:45:35 -06:00
mpc86xads_setup.c powerpc: Move 32-bit probe() machine to later in the boot process 2016-07-21 19:06:42 +10:00
mpc885ads.h powerpc/cpm: Remove some cruft code and defines 2009-05-19 00:47:19 -05:00
mpc885ads_setup.c powerpc: Move 32-bit probe() machine to later in the boot process 2016-07-21 19:06:42 +10:00
tqm8xx_setup.c powerpc: Move 32-bit probe() machine to later in the boot process 2016-07-21 19:06:42 +10:00