MIPS: Malta: Fix crash in SMP kernel on non-CMP systems.

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Since 6be63bbbda (lmo) rsp.
af3a1f6f48 (kernel.org) the Malta code does
no longer probe for presence of GCMP if CMP is not configured.  This means
that the variable gcmp_present well be left at its default value of -1
which normally is meant to indicate that GCMP has not yet been mmapped.
This non-zero value is now interpreted as GCMP being present resulting
in a write attempt to a GCMP register resulting in a crash.

Reported and a build fix on top of my fix by Rob Landley <rob@landley.net>.

Reported-by: Rob Landley <rob@landley.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2413/

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This commit is contained in:

Ralf Baechle 2011-05-28 15:27:59 +01:00

parent b12acf163f

commit 852fe3105e

4 changed files with 56 additions and 24 deletions

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41

arch/mips/include/asm/smp-ops.h

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17

arch/mips/mipssim/sim_setup.c

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14

arch/mips/mti-malta/malta-init.c

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8

arch/mips/pmc-sierra/msp71xx/msp_setup.c

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