linux-sg2042/arch/sparc
David S. Miller 7cc8583372 sparc64: Fix MSIQ HV call ordering in pci_sun4v_msiq_build_irq().
This silently was working for many years and stopped working on
Niagara-T3 machines.

We need to set the MSIQ to VALID before we can set it's state to IDLE.

On Niagara-T3, setting the state to IDLE first was causing HV_EINVAL
errors.  The hypervisor documentation says, rather ambiguously, that
the MSIQ must be "initialized" before one can set the state.

I previously understood this to mean merely that a successful setconf()
operation has been performed on the MSIQ, which we have done at this
point.  But it seems to also mean that it has been set VALID too.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-22 13:46:53 -08:00
..
boot sparc32: added U-Boot build target: uImage 2011-03-16 18:19:04 -07:00
configs defconfig reduction 2010-08-14 22:26:53 +02:00
include/asm sparc: Kill custom io_remap_pfn_range(). 2011-11-17 18:17:59 -08:00
kernel sparc64: Fix MSIQ HV call ordering in pci_sun4v_msiq_build_irq(). 2011-12-22 13:46:53 -08:00
lib sparc32: Correct the return value of memcpy. 2011-10-20 15:17:23 -07:00
math-emu perf: Remove the nmi parameter from the swevent and overflow interface 2011-07-01 11:06:35 +02:00
mm sparc32: Be less strict in matching %lo part of relocation. 2011-12-14 10:57:28 -08:00
oprofile sparc: using HZ needs an include of linux/param.h 2009-10-05 00:46:08 -07:00
prom sparc: Remove unnecessary semicolons 2011-06-07 16:06:34 -07:00
Kconfig Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2011-11-06 18:54:53 -08:00
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Makefile sparc32: added U-Boot build target: uImage 2011-03-16 18:19:04 -07:00