From: Vineet Gupta <vgupta@synopsys.com>
Date: Wed, 12 Jun 2013 08:19:02 +0000 (+0530)
Subject: ARC: [mm] Remove @write argument to do_page_fault()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~38^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3e1ae441886b82fbf605f37ac0756b811d55f3d5;p=pandora-kernel.git

ARC: [mm] Remove @write argument to do_page_fault()

This can be ascertained within do_page_fault() since it gets the full
ECR (Exception Cause Register).

Further, for both the callers of do_page_fault(): Prot-V / D-TLB-Miss,
the cause sub-fields in ECR are same for same type of access, making the
code much more simpler.

D-TLB-Miss [LD] 0x00_21_01_00
Prot-V     [LD] 0x00_23_01_00
                        ^^
D-TLB-Miss [ST] 0x00_21_02_00
Prot-V     [ST] 0x00_23_02_00
                        ^^
D-TLB-Miss [EX] 0x00_21_03_00
Prot-V     [EX] 0x00_23_03_00
                        ^^

This helps code consolidation, which is even better when moving code from
assembler to "C".

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

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