evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

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

Browse source 
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>
(cherry picked from commit b97d0b9099afcd5c569acaf9b0eb3f6e3b1b1f35)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Matt Redfearn 2016-09-07 10:45:11 +01:00 • committed by Greg Kroah-Hartman
parent 4eb22eaa8a
commit 2710d8db28
1 changed files with 2 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
arch/mips/kernel/pm-cps.c
View file

@ -271,14 +271,9 @@ 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;
}
/*