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Fri, 21 May 2021 06:43:03 +0000 Received: from AM6PR04MB4966.eurprd04.prod.outlook.com ([fe80::b10a:ad0:a6f5:db9b]) by AM6PR04MB4966.eurprd04.prod.outlook.com ([fe80::b10a:ad0:a6f5:db9b%2]) with mapi id 15.20.4129.034; Fri, 21 May 2021 06:43:03 +0000 From: Aisheng Dong To: Clark Wang , "robh+dt@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "festevam@gmail.com" CC: "kernel@pengutronix.de" , dl-linux-imx , "linux-i2c@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH V2 08/18] i2c: imx-lpi2c: add debug message when i2c peripheral clk doesn't work Thread-Topic: [PATCH V2 08/18] i2c: imx-lpi2c: add debug message when i2c peripheral clk doesn't work Thread-Index: AQHXKtipxddpGSIHSEOxOfLZHVlnOKrtwm5Q Date: Fri, 21 May 2021 06:43:03 +0000 Message-ID: References: <20210406113306.2633595-1-xiaoning.wang@nxp.com> <20210406113306.2633595-9-xiaoning.wang@nxp.com> In-Reply-To: <20210406113306.2633595-9-xiaoning.wang@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: nxp.com; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > From: Clark Wang > Sent: Tuesday, April 6, 2021 7:33 PM > > add debug message when i2c peripheral clk rate is 0, then directly return > -EINVAL. > > Signed-off-by: Clark Wang You sign-off should be put after the original patch author > Signed-off-by: Gao Pan > Reviewed-by: Andy Duan Drop the original review when they're significant changes > --- > V2 changes: > - Add my signed-off. > --- > drivers/i2c/busses/i2c-imx-lpi2c.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c > b/drivers/i2c/busses/i2c-imx-lpi2c.c > index 333209ba81c1..dfec334712c2 100644 > --- a/drivers/i2c/busses/i2c-imx-lpi2c.c > +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c > @@ -210,6 +210,11 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct > *lpi2c_imx) > lpi2c_imx_set_mode(lpi2c_imx); > > clk_rate = clk_get_rate(lpi2c_imx->clk_per); > + if (!clk_rate) { > + dev_dbg(&lpi2c_imx->adapter.dev, "clk_per rate is 0\n"); s/dev_dbg/dev_err > + return -EINVAL; > + } > + > if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST) > filt = 0; > else > -- > 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel