From: Krzysztof Kozlowski <krzk@kernel.org>
To: Thorsten Blum <thorsten.blum@linux.dev>,
Dinh Nguyen <dinguyen@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>
Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] clk: socfpga: stratix10: Optimize local variables
Date: Wed, 29 Jan 2025 11:28:46 +0100 [thread overview]
Message-ID: <fbf1e3aa-cab3-44b5-b873-b4061eb169b2@kernel.org> (raw)
In-Reply-To: <20250114112943.617371-2-thorsten.blum@linux.dev>
On 14/01/2025 12:29, Thorsten Blum wrote:
> Since readl() returns a u32, the local variable reg can also have the
> data type u32. Furthermore, mdiv and refdiv are derived from reg and can
> also be a u32.
>
> Since do_div() casts the divisor to u32 anyway, changing the data type
> of refdiv to u32 removes the following Coccinelle/coccicheck warning
> reported by do_div.cocci:
>
> WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead
>
> Compile-tested only.
>
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
> ---
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards,
Krzysztof
prev parent reply other threads:[~2025-01-29 10:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-14 11:29 [PATCH] clk: socfpga: stratix10: Optimize local variables Thorsten Blum
2025-01-29 10:28 ` Krzysztof Kozlowski [this message]
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