From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@bootlin.com (Maxime Ripard) Date: Mon, 19 Feb 2018 09:54:08 +0100 Subject: [PATCH v3 7/7] ARM: sun8i: smp: Remove the disabling of CPU0 In-Reply-To: <20180219081837.15482-8-mylene.josserand@bootlin.com> References: <20180219081837.15482-1-mylene.josserand@bootlin.com> <20180219081837.15482-8-mylene.josserand@bootlin.com> Message-ID: <20180219085408.5to43p7jbtijx4q3@flea.lan> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Feb 19, 2018 at 09:18:37AM +0100, Myl?ne Josserand wrote: > On sun8i-a63t, hotplug CPU for CPU0 is currently not working. > Remove the possibility to disable CPU0 only for sun8i-a83t. > > Signed-off-by: Myl?ne Josserand > --- > arch/arm/mach-sunxi/mc_smp.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/mach-sunxi/mc_smp.c b/arch/arm/mach-sunxi/mc_smp.c > index fec592bf68b4..69d5ae5b3d72 100644 > --- a/arch/arm/mach-sunxi/mc_smp.c > +++ b/arch/arm/mach-sunxi/mc_smp.c > @@ -661,8 +661,12 @@ static int sunxi_mc_smp_cpu_kill(unsigned int l_cpu) > return !ret; > } > > -static bool sunxi_mc_smp_cpu_can_disable(unsigned int __unused) > +static bool sunxi_mc_smp_cpu_can_disable(unsigned int cpu) > { > + /* CPU0 hotplug handled only for sun9i */ > + if (of_machine_is_compatible("allwinner,sun8i-a83t")) > + if (cpu == 0) > + return false; This also means that you have a window in your patch sequence where you can disable the CPU0 on the A83t. This patch should be earlier. Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering http://bootlin.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: