From: Aisheng Dong <aisheng.dong@nxp.com>
To: Clark Wang <xiaoning.wang@nxp.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"s.hauer@pengutronix.de" <s.hauer@pengutronix.de>
Cc: "kernel@pengutronix.de" <kernel@pengutronix.de>,
"festevam@gmail.com" <festevam@gmail.com>,
dl-linux-imx <linux-imx@nxp.com>,
"sumit.semwal@linaro.org" <sumit.semwal@linaro.org>,
"christian.koenig@amd.com" <christian.koenig@amd.com>,
"linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 10/11] i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle
Date: Fri, 19 Mar 2021 05:16:18 +0000 [thread overview]
Message-ID: <AM6PR04MB496646D93BE72408D9110A5A80689@AM6PR04MB4966.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20210317065359.3109394-11-xiaoning.wang@nxp.com>
> From: Clark Wang <xiaoning.wang@nxp.com>
> Sent: Wednesday, March 17, 2021 2:54 PM
>
> Claim clkhi and clklo as integer type to avoid possible calculation errors caused
> by data overflow.
>
> Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
> Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Regards
Aisheng
> ---
> drivers/i2c/busses/i2c-imx-lpi2c.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c
> b/drivers/i2c/busses/i2c-imx-lpi2c.c
> index 5dbe85126f24..1e26672d47bf 100644
> --- a/drivers/i2c/busses/i2c-imx-lpi2c.c
> +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
> @@ -213,8 +213,8 @@ static void lpi2c_imx_stop(struct lpi2c_imx_struct
> *lpi2c_imx)
> CLKHI = I2C_CLK_RATIO * clk_cycle */ static int lpi2c_imx_config(struct
> lpi2c_imx_struct *lpi2c_imx) {
> - u8 prescale, filt, sethold, clkhi, clklo, datavd;
> - unsigned int clk_rate, clk_cycle;
> + u8 prescale, filt, sethold, datavd;
> + unsigned int clk_rate, clk_cycle, clkhi, clklo;
> enum lpi2c_imx_pincfg pincfg;
> unsigned int temp;
>
> --
> 2.25.1
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next prev parent reply other threads:[~2021-03-19 5:18 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-17 6:53 [PATCH 00/11] i2c: imx-lpi2c: New features and bug fixes Clark Wang
2021-03-17 6:53 ` [PATCH 01/11] i2c: imx-lpi2c: directly retrun ISR when detect a NACK Clark Wang
2021-03-19 4:25 ` Aisheng Dong
2021-03-17 6:53 ` [PATCH 02/11] i2c: imx-lpi2c: add runtime pm support Clark Wang
2021-03-19 4:40 ` Aisheng Dong
2021-03-19 5:33 ` Clark Wang
2021-03-19 6:16 ` Clark Wang
2021-03-19 8:00 ` Clark Wang
2021-03-19 10:26 ` Aisheng Dong
2021-03-17 6:53 ` [PATCH 03/11] i2c: imx-lpi2c: add ipg clk for lpi2c driver Clark Wang
2021-03-19 4:46 ` Aisheng Dong
2021-03-19 6:23 ` Clark Wang
2021-03-19 9:18 ` Aisheng Dong
2021-03-17 6:53 ` [PATCH 04/11] i2c: imx-lpi2c: manage irq resource request/release in runtime pm Clark Wang
2021-03-19 4:53 ` Aisheng Dong
2021-03-19 7:03 ` Clark Wang
2021-03-19 10:12 ` Aisheng Dong
2021-03-17 6:53 ` [PATCH 05/11] i2c: imx-lpi2c: add debug message when i2c peripheral clk doesn't work Clark Wang
2021-03-19 4:56 ` Aisheng Dong
2021-03-19 7:07 ` Clark Wang
2021-03-17 6:53 ` [PATCH 06/11] i2c: imx-lpi2c: improve i2c driver probe priority Clark Wang
2021-03-19 5:05 ` Aisheng Dong
2021-03-19 5:38 ` Wolfram Sang
2021-03-19 7:39 ` [EXT] " Clark Wang
2021-03-17 6:53 ` [PATCH 07/11] i2c: imx-lpi2c: increase PM timeout to avoid operate clk frequently Clark Wang
2021-03-19 5:10 ` Aisheng Dong
2021-03-17 6:53 ` [PATCH 08/11] i2c: imx-lpi2c: add bus recovery feature Clark Wang
2021-03-19 5:11 ` Aisheng Dong
2021-03-17 6:53 ` [PATCH 09/11] i2c: imx-lpi2c: fix i2c timing issue Clark Wang
2021-03-19 5:15 ` Aisheng Dong
2021-03-19 7:21 ` Clark Wang
2021-03-17 6:53 ` [PATCH 10/11] i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle Clark Wang
2021-03-19 5:16 ` Aisheng Dong [this message]
2021-03-17 6:53 ` [PATCH 11/11] i2c: imx-lpi2c: add edma mode support Clark Wang
2021-03-19 5:28 ` Aisheng Dong
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