From: Michael Ellerman <michael@ellerman.id.au>
Date: Tue, 17 Feb 2009 00:18:49 +0000 (+0000)
Subject: powerpc/pseries: Return req#msi(-x) if request is larger
X-Git-Tag: v2.6.30-rc1~619^2~85
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d523cc379da57f1c39f5db9c47bdaa94f74727ff;p=pandora-kernel.git

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

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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