From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Date: Fri, 18 Apr 2008 19:39:03 +0000 (+0400)
Subject: [SCSI] aic79xx: fix MMIO for PPC 44x platforms
X-Git-Tag: v2.6.26-rc1~1027^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8911c9e3343c647b59727b47b10feca7ee9ac9c3;p=pandora-kernel.git

[SCSI] aic79xx: fix MMIO for PPC 44x platforms

The driver stores the PCI resource address into 'u_long' variable before
calling ioremap_nocache() on it. This warrants kernel oops when the registers
are accessed on PPC 44x platforms which (being 32-bit) have PCI memory space
mapped beyond 4 GB.

The arch/ppc/ kernel has a fixup in ioremap() that helps create an illusion
that the PCI memory resources are mapped below 4 GB, but arch/powerpc/ code
got rid of this trick, having instead CONFIG_RESOURCES_64BIT enabled.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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