linux/arch/powerpc/platforms/512x
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/512x: add LocalPlus Bus FIFO device driver 2015-10-22 15:19:40 +02:00
clock-commonclk.c powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
mpc512x.h powerpc: Make ppc_md.{halt, restart} __noreturn 2016-07-14 21:12:06 +10:00
mpc512x_generic.c powerpc: Get rid of ppc_md.init_early() 2016-07-21 19:07:26 +10:00
mpc512x_lpbfifo.c powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mpc512x_shared.c powerpc: Make ppc_md.{halt, restart} __noreturn 2016-07-14 21:12:06 +10:00
mpc5121_ads.c powerpc: Get rid of ppc_md.init_early() 2016-07-21 19:07:26 +10:00
mpc5121_ads.h powerpc/mpc5121: Add support for CPLD on MPC5121ADS board 2008-07-12 12:10:55 -06:00
mpc5121_ads_cpld.c powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
pdm360ng.c powerpc: Get rid of ppc_md.init_early() 2016-07-21 19:07:26 +10:00