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MIPS: pm-cps: Change FSB workaround to CPU blacklist

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The check for whether a CPU required the FSB flush workaround
previously required every CPU not requiring it to be whitelisted. That
approach does not scale well as new CPUs are introduced so change the
default from a WARN and returning an error to just returning 0. Any CPUs
requiring the workaround can then be added to the blacklist.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14218/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Matt Redfearn 2016-09-07 10:45:11 +01:00 committed by Ralf Baechle
parent d621942048
commit b97d0b9099
1 changed files with 2 additions and 7 deletions
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9
arch/mips/kernel/pm-cps.c
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@ -272,14 +272,9 @@ static int __init cps_gen_flush_fsb(u32 **pp, struct uasm_label **pl,
/* On older ones it's unavailable */
return -1;
/* CPUs which do not require the workaround */
case CPU_P5600:
case CPU_I6400:
return 0;
default:
WARN_ONCE(1, "pm-cps: FSB flush unsupported for this CPU\n");
return -1;
/* Assume that the CPU does not need this workaround */
return 0;
}
/*