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30da552428
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>
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|---|---|---|
| .. | ||
| apic.c | ||
| apic_flat_64.c | ||
| apic_noop.c | ||
| bigsmp_32.c | ||
| es7000_32.c | ||
| io_apic.c | ||
| ipi.c | ||
| Makefile | ||
| nmi.c | ||
| numaq_32.c | ||
| probe_32.c | ||
| probe_64.c | ||
| summit_32.c | ||
| x2apic_cluster.c | ||
| x2apic_phys.c | ||
| x2apic_uv_x.c | ||