Re: [PATCH] ARM: drop ISAR0 workaround for B15

From: Brian Norris
Date: Tue Sep 02 2014 - 19:49:35 EST


Ping.

Is this worthy of 3.17-rc? Or should it just be queued for 3.18, as it's
only removing redundant info?

On Wed, Aug 13, 2014 at 12:40:47PM -0700, Brian Norris wrote:
> The Brahma-B15's ISAR0 correcty advertises UDIV/SDIV support in both ARM
> and Thumb2 modes (CPUID_EXT_ISAR0=02101110), so we don't need to
> manually apply this hwcap.
>
> The code in question actually predates the following commit, which made
> our hwcaps unnecessary:
>
> commit 8164f7af88d9ad3a757bd14f634b23997ee77f6b
> Author: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> Date: Mon Mar 18 19:44:15 2013 +0100
>
> ARM: 7680/1: Detect support for SDIV/UDIV from ISAR0 register
>
> Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> ---
> Supersedes Gregory's previous patch.
>
> This addresses some very old review comments from Mark and Will:
>
> http://lists.infradead.org/pipermail/linux-arm-kernel/2014-January/225895.html
> http://lists.infradead.org/pipermail/linux-arm-kernel/2014-January/227916.html
>
> arch/arm/mm/proc-v7.S | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
> index b5d67db20897..b3a947863ac7 100644
> --- a/arch/arm/mm/proc-v7.S
> +++ b/arch/arm/mm/proc-v7.S
> @@ -570,7 +570,7 @@ __v7_ca15mp_proc_info:
> __v7_b15mp_proc_info:
> .long 0x420f00f0
> .long 0xff0ffff0
> - __v7_proc __v7_b15mp_setup, hwcaps = HWCAP_IDIV
> + __v7_proc __v7_b15mp_setup
> .size __v7_b15mp_proc_info, . - __v7_b15mp_proc_info
>
> /*
--
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