linux-kernel - Re: [PATCH] mlxsw: spectrum

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Date:   Wed, 19 Jun 2019 16:42:46 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Jiri Pirko <jiri@...lanox.com>, Ido Schimmel <idosch@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>,
        Shalom Toledo <shalomt@...lanox.com>,
        Petr Machata <petrm@...lanox.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mlxsw: spectrum_ptp: fix 32-bit build

On Wed, Jun 19, 2019 at 03:31:20PM +0200, Arnd Bergmann wrote:
> On 32-bit architectures, we cannot easily device 64-bit numbers:
> 
> ERROR: "__aeabi_uldivmod" [drivers/net/ethernet/mellanox/mlxsw/mlxsw_spectrum.ko] undefined!
> 
> Use do_div() to annotate the fact that we know this is an
> expensive operation.
> 
> Fixes: 992aa864dca0 ("mlxsw: spectrum_ptp: Add implementation for physical hardware clock operations")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Arnd, thanks for the patch. We already patched this issue yesterday:
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=cd4bb2a3344cb53d9234cca232edfb2dce0f0a35