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| author | Nishanth Aravamudan <nacc@us.ibm.com> | 2011-03-03 18:41:02 +0300 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-03-11 06:18:24 +0300 |
| commit | 964a29962c278ddff8a199f23d7c9ef35152a0fe (patch) | |
| tree | c9bcd5e09766ffb9ca043cea110a9e0ae5e735d7 /arch/powerpc/platforms/85xx/smp.c | |
| parent | 17b9f9e2653a2eae3b7e1bb8a1f7f80f6edc3fe3 (diff) | |
| download | linux-964a29962c278ddff8a199f23d7c9ef35152a0fe.tar.xz | |
powerpc/pseries: Disable MSI using new interface if possible
On upcoming hardware, we have a PCI adapter with two functions, one of
which uses MSI and the other uses MSI-X. This adapter, when MSI is
disabled using the "old" firmware interface (RTAS_CHANGE_FN), still
signals an MSI-X interrupt and triggers an EEH. We are working with the
vendor to ensure that the hardware is not at fault, but if we use the
"new" interface (RTAS_CHANGE_MSI_FN) to disable MSI, we also
automatically disable MSI-X and the adapter does not appear to signal
any stray MSI-X interrupt.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/85xx/smp.c')
0 files changed, 0 insertions, 0 deletions