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i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle

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Claim clkhi and clklo as integer type to avoid possible calculation
errors caused by data overflow.

Fixes: a55fa9d0e4 ("i2c: imx-lpi2c: add low power i2c bus driver")
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Clark Wang 2023-05-29 16:02:51 +08:00 • committed by Wolfram Sang
parent cd9489623c
commit e69b9bc170
1 changed files with 2 additions and 2 deletions
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4
drivers/i2c/busses/i2c-imx-lpi2c.c
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@ -201,8 +201,8 @@ static void lpi2c_imx_stop(struct lpi2c_imx_struct *lpi2c_imx)
/* CLKLO = I2C_CLK_RATIO * CLKHI, SETHOLD = CLKHI, DATAVD = CLKHI/2 */ /* CLKLO = I2C_CLK_RATIO * CLKHI, SETHOLD = CLKHI, DATAVD = CLKHI/2 */
static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx) static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx)
{ {
u8 prescale, filt, sethold, clkhi, clklo, datavd; u8 prescale, filt, sethold, datavd;
unsigned int clk_rate, clk_cycle; unsigned int clk_rate, clk_cycle, clkhi, clklo;
enum lpi2c_imx_pincfg pincfg; enum lpi2c_imx_pincfg pincfg;
unsigned int temp; unsigned int temp;