Thread (35 messages) 35 messages, 3 authors, 2021-03-19

RE: [PATCH 10/11] i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle

From: Aisheng Dong <aisheng.dong@nxp.com>
Date: 2021-03-19 05:16:57
Also in: linux-i2c, lkml

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 <redacted>
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>

Regards
Aisheng
quoted hunk ↗ jump to hunk
---
 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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