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[62.216.208.163]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-429ded71ecdsm28300485e9.37.2024.08.14.12.49.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 12:49:57 -0700 (PDT) From: Thorsten Blum To: dinguyen@kernel.org, mturquette@baylibre.com, sboyd@kernel.org Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Thorsten Blum Subject: [PATCH] clk: socfpga: arria10: Optimize local variables in clk_pll_recalc_rate() Date: Wed, 14 Aug 2024 21:49:38 +0200 Message-ID: <20240814194937.1868-2-thorsten.blum@toblux.com> X-Mailer: git-send-email 2.46.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Since readl() returns a u32, the local variable reg can also have the data type u32. Furthermore, divf and divq are derived from reg and can also be a u32. Since do_div() casts the divisor to u32 anyway, changing the data type of divq 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_u= l instead Compile-tested only. Signed-off-by: Thorsten Blum --- drivers/clk/socfpga/clk-pll-a10.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/socfpga/clk-pll-a10.c b/drivers/clk/socfpga/clk-pl= l-a10.c index b028f25c658a..62eed964c3d0 100644 --- a/drivers/clk/socfpga/clk-pll-a10.c +++ b/drivers/clk/socfpga/clk-pll-a10.c @@ -35,7 +35,7 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *h= wclk, unsigned long parent_rate) { struct socfpga_pll *socfpgaclk =3D to_socfpga_clk(hwclk); - unsigned long divf, divq, reg; + u32 divf, divq, reg; unsigned long long vco_freq; =20 /* read VCO1 reg for numerator and denominator */ --=20 2.45.2