[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230724105546.1964059-3-carlos.song@nxp.com>
Date: Mon, 24 Jul 2023 18:55:46 +0800
From: carlos.song@....com
To: andi.shyti@...nel.org, aisheng.dong@....com, shawnguo@...nel.org,
s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com
Cc: carlos.song@....com, xiaoning.wang@....com, haibo.chen@....com,
linux-imx@....com, linux-i2c@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/3] i2c: imx-lpi2c: add debug message when i2c peripheral clk doesn't work
From: Gao Pan <pandy.gao@....com>
Output error log when i2c peripheral clk rate is 0, then
directly return -EINVAL.
Fixes: a55fa9d0e42e ("i2c: imx-lpi2c: add low power i2c bus driver")
Signed-off-by: Gao Pan <pandy.gao@....com>
Signed-off-by: Carlos Song <carlos.song@....com>
---
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 e93ff3b5373c..12b4f2a89343 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -214,6 +214,11 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx)
lpi2c_imx_set_mode(lpi2c_imx);
clk_rate = clk_get_rate(lpi2c_imx->clks[0].clk);
+ if (!clk_rate) {
+ dev_err(&lpi2c_imx->adapter.dev, "clk_per rate is 0\n");
+ return -EINVAL;
+ }
+
if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST)
filt = 0;
else
--
2.34.1
Powered by blists - more mailing lists