[PATCH 0/3] Use generic helper scu_power_mode()

Bastian Hecht hechtb at googlemail.com
Thu Oct 25 06:58:19 EDT 2012

Reposted to include the arch/arm mailing list.

The shmobile series implements its own code for setting the SCU power
register of the ARM MPCore. It uses 32-bit wide access and thus needs
locking as multiple CPUs might access it simultaneously for change. There is
already a small helper function that avoids the overhead by using 8-bit
wide access: As every CPU only accesses its own field we can drop the
lock and use it.

Bastian Hecht (3):
  ARM: shmobile: emev2: Replace modify_scu_cpu_psr with scu_power_mode
  ARM: shmobile: sh73a0: Replace modify_scu_cpu_psr with scu_power_mode
  ARM: shmobile: r8a7779: Replace modify_scu_cpu_psr with

 arch/arm/mach-shmobile/smp-emev2.c   |   22 ++--------------------
 arch/arm/mach-shmobile/smp-r8a7779.c |   25 +++----------------------
 arch/arm/mach-shmobile/smp-sh73a0.c  |   23 ++---------------------
 3 files changed, 7 insertions(+), 63 deletions(-)


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