powerpc: rtc_cmos_setup: assign interrupts only if there is i8259 PIC
authorAnton Vorontsov <avorontsov@ru.mvista.com>
Wed, 11 Jun 2008 23:04:31 +0000 (03:04 +0400)
committerKumar Gala <galak@kernel.crashing.org>
Mon, 28 Jul 2008 13:47:38 +0000 (08:47 -0500)
commite517881e427757afc3cce6d76173b1d898b30ab3
tree435a274bdad9e8d8c60cb987e1d29e291695f736
parent80776554b6c93cf828ddc702010c6a189aa0d0e9
powerpc: rtc_cmos_setup: assign interrupts only if there is i8259 PIC

i8259 PIC is disabled on MPC8610HPCD boards, thus currently rtc-cmos
driver fails to probe.

To fix the issue, we lookup the device tree for "chrp,iic" and
"pnpPNP,000" compatible devices, and if not found we do not assign RTC
IRQ and assuming that i8259 was disabled.

Though this patch fixes RTC on some boards (and surely should not break
any other), the whole approach is still broken. We can't easily fix this
though, because old device trees do not specify i8259 interrupts for the
cmos rtc node.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
arch/powerpc/sysdev/rtc_cmos_setup.c