From: David S. Miller <davem@sunset.davemloft.net>
Date: Fri, 31 Aug 2007 05:27:28 +0000 (-0700)
Subject: [SPARC64]: Fix several bugs in MSI handling.
X-Git-Tag: v2.6.23-rc5~36^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f92c329364c0bf2d3a356da5e8759fbe349f9d1;p=pandora-kernel.git

[SPARC64]: Fix several bugs in MSI handling.

1) sun4{u,v}_build_msi() have improper return value handling.

   We should always return negative error codes, instead of
   using the magic value "0" which could in fact be a valid
   MSI number.

2) sun4{u,v}_build_msi() should return -ENOMEM instead of
   calling prom_prom() halt with kzalloc() of the interrupt
   data fails.

3) We 'remembered' the MSI number using a singleton in the
   struct device archdata area, this doesn't work for MSI-X
   which can cause multiple MSIs assosciated with one device.

   Delete that archdata member, and instead store the MSI
   number in the IRQ chip data area.

Signed-off-by: David S. Miller <davem@davemloft.net>
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