From: Qii Wang <qii.wang@xxxxxxxxxxxx> Use div_u64 for 64-bit division, and change sample_ns type to unsigned int. Otherwise, the module will reference __udivdi3 under 32-bit kernels, which is not allowed in kernel space. Signed-off-by: Qii Wang <qii.wang@xxxxxxxxxxxx> --- drivers/i2c/busses/i2c-mt65xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 7020618..deef69e 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -551,7 +551,8 @@ static int mtk_i2c_check_ac_timing(struct mtk_i2c *i2c, const struct i2c_spec_values *spec; unsigned int su_sta_cnt, low_cnt, high_cnt, max_step_cnt; unsigned int sda_max, sda_min, clk_ns, max_sta_cnt = 0x3f; - long long sample_ns = (1000000000 * (sample_cnt + 1)) / clk_src; + unsigned int sample_ns = div_u64(1000000000ULL * (sample_cnt + 1), + clk_src); if (!i2c->dev_comp->timing_adjust) return 0; -- 1.9.1
