powerpc/pseries: Return req#msi(-x) if request is larger

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If a driver asks for more MSIs than the devices "req#msi(-x)" property,
we currently return -ENOSPC. This doesn't give the driver any chance to
make a new request with a number that might work.

So if "req#msi(-x)" is less than the request, return its value. To be
100% safe, make sure we return an error if req_msi == 0.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Michael Ellerman 2009-02-17 00:18:49 +00:00 • committed by Benjamin Herrenschmidt

parent 620165f971

commit d523cc379d

1 changed files with 5 additions and 1 deletions

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arch/powerpc/platforms/pseries/msi.c

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