On Thu, Dec 13, 2018 at 7:00 PM Russell King <rmk+kernel@xxxxxxxxxxxxxxx> wrote: > The boot_lock is something that was required for ARM development > platforms to ensure that the delay calibration worked properly. This > is not necessary for modern platforms that have better bus bandwidth > and do not need to calibrate the delay loop for secondary cores. > Remove the boot_lock entirely. > > Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Andy have you had a chance to test/apply this patch? I think the majority of Qcom systems use CLKSRC_QCOM which registers an arch delay timer and swiftly bypasses the calibration anyways so this code is pretty much pointless. There is a question about MSM8974 though. This appears to not use CLKSRC_QCOM but rather HAVE_ARM_ARCH_TIMER. drivers/clocksource/arm_arch_timer.c seems to not register a delay timer, which is probably something that should be fixed? Mark/Marc: is there any specific reason to why the ARM arch timer does not register an arch delay timer? Yours, Linus Walleij
