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linux-uconsole/arch/x86/kernel/apic
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Ben Hutchings bd614669ff PCI: MSI: Restore read_msi_msg_desc(); add get_cached_msi_msg_desc() 
commit 30da552428 upstream.

commit 2ca1af9aa3285c6a5f103ed31ad09f7399fc65d7 "PCI: MSI: Remove
unsafe and unnecessary hardware access" changed read_msi_msg_desc() to
return the last MSI message written instead of reading it from the
device, since it may be called while the device is in a reduced
power state.

However, the pSeries platform code really does need to read messages
from the device, since they are initially written by firmware.
Therefore:
- Restore the previous behaviour of read_msi_msg_desc()
- Add new functions get_cached_msi_msg{,_desc}() which return the
  last MSI message written
- Use the new functions where appropriate

Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-09-20 13:17:44 -07:00
..
apic.c x86, apic: ack all pending irqs when crashed/on kexec 2010-08-26 16:42:00 -07:00
apic_flat_64.c x86, apic: use physical mode for IBM summit platforms 2010-01-22 15:18:13 -08:00
bigsmp_32.c x86: apic namespace cleanup 2009-08-31 21:30:47 +02:00
es7000_32.c Merge branch 'for-ingo' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6 into x86/apic 2009-08-29 09:31:47 +02:00
io_apic.c PCI: MSI: Restore read_msi_msg_desc(); add get_cached_msi_msg_desc() 2010-09-20 13:17:44 -07:00
ipi.c Merge commit 'v2.6.31-rc7' into x86/cleanups 2009-08-24 12:25:54 +02:00
Makefile x86, apic: separate 32-bit setup functionality out of apic_32.c 2009-02-17 23:12:48 +01:00
nmi.c sysctl: remove "struct file *" argument of ->proc_handler 2009-09-24 07:21:04 -07:00
numaq_32.c x86: apic namespace cleanup 2009-08-31 21:30:47 +02:00
probe_32.c x86, apic: Don't use logical-flat mode when CPU hotplug may exceed 8 CPUs 2010-04-01 15:58:14 -07:00
probe_64.c x86, apic: Don't use logical-flat mode when CPU hotplug may exceed 8 CPUs 2010-04-01 15:58:14 -07:00
summit_32.c x86: apic namespace cleanup 2009-08-31 21:30:47 +02:00
x2apic_cluster.c x86: Fix MSI-X initialization by using online_mask for x2apic target_cpus 2009-08-08 17:04:58 +02:00
x2apic_phys.c x86: Fix MSI-X initialization by using online_mask for x2apic target_cpus 2009-08-08 17:04:58 +02:00
x2apic_uv_x.c x86: SGI UV: Fix mapping of MMIO registers 2010-01-22 15:18:16 -08:00