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From: Leon Romanovsky <leon@kernel.org>
To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: andrew.murray@arm.com, maz@kernel.org,
	linux-kernel@vger.kernel.org,
	"Michael Turquette" <mturquette@baylibre.com>,
	"Stephen Boyd" <sboyd@kernel.org>,
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	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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Subject: Re: [PATCH v4 7/8] linux/log2.h: Fix 64bit calculations in roundup/down_pow_two()
Date: Wed, 4 Dec 2019 16:17:25 +0200
Message-ID: <20191204141725.GA4939@unreal> (raw)
In-Reply-To: <20191203114743.1294-8-nsaenzjulienne@suse.de>

On Tue, Dec 03, 2019 at 12:47:40PM +0100, Nicolas Saenz Julienne wrote:
> Some users need to make sure their rounding function accepts and returns
> 64bit long variables regardless of the architecture. Sadly
> roundup/rounddown_pow_two() takes and returns unsigned longs. It turns
> out ilog2() already handles 32/64bit calculations properly, and being
> the building block to the round functions we can rework them as a
> wrapper around it.
>
> Suggested-by: Robin Murphy <robin.murphy@arm.con>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  drivers/clk/clk-divider.c                    |  8 ++--
>  drivers/clk/sunxi/clk-sunxi.c                |  2 +-
>  drivers/infiniband/hw/hfi1/chip.c            |  4 +-
>  drivers/infiniband/hw/hfi1/init.c            |  4 +-
>  drivers/infiniband/hw/mlx4/srq.c             |  2 +-
>  drivers/infiniband/hw/mthca/mthca_srq.c      |  2 +-
>  drivers/infiniband/sw/rxe/rxe_qp.c           |  4 +-


Thanks, for infiniband.
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-03 11:47 [PATCH v4 0/8] Raspberry Pi 4 PCIe support Nicolas Saenz Julienne
2019-12-03 11:47 ` [PATCH v4 7/8] linux/log2.h: Fix 64bit calculations in roundup/down_pow_two() Nicolas Saenz Julienne
2019-12-03 16:39   ` Chuck Lever
2019-12-04 10:56   ` Martin Habets
2019-12-04 14:17   ` Leon Romanovsky [this message]
2019-12-05  0:39   ` Lu Baolu
2019-12-05 17:48   ` Robin Murphy
2019-12-12 12:31     ` Nicolas Saenz Julienne
2019-12-05 22:30   ` Bjorn Helgaas
2019-12-12 13:16     ` Nicolas Saenz Julienne
2019-12-03 11:47 ` [PATCH v4 8/8] linux/log2.h: Use roundup/dow_pow_two() on 64bit calculations Nicolas Saenz Julienne
2019-12-03 15:53   ` Rob Herring
2019-12-03 16:06     ` Nicolas Saenz Julienne
2019-12-05 20:38   ` Bjorn Helgaas
2019-12-12 13:21     ` Nicolas Saenz Julienne

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