From: Scott Wood <scottwood@freescale.com>
Date: Mon, 28 Apr 2014 23:20:09 +0000 (-0500)
Subject: powerpc/fsl-rio: Fix fsl_rio_setup error paths and use-after-unmap
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~60^2~30^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a614db9ae9377f102d3fc35ca52efd93454f7a77;p=pandora-kernel.git

powerpc/fsl-rio: Fix fsl_rio_setup error paths and use-after-unmap

Several of the error paths from fsl_rio_setup are missing error
messages.

Worse, fsl_rio_setup initializes several global pointers and does not
NULL them out after freeing/unmapping on error.  This caused
fsl_rio_mcheck_exception() to crash when accessing rio_regs_win which
was non-NULL but had been unmapped.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Liu Gang <Gang.Liu@freescale.com>
---
Liu Gang, are you sure all of these error conditions are fatal?  Why
does the rio driver fail if rmu is not present (e.g.  on t4240)?
---

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