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i2c: i2c-stm32f7: improve loopback in timing algorithm

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This avoids useless loops inside the I2C timing algorithm.
Actually, we support only one possible solution per prescaler value.
So after finding a solution with a prescaler, the algorithm can
switch directly to the next prescaler value.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Bich Hemon <bich.hemon@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Nicolas Le Bayon 2019-03-06 15:12:32 +00:00 committed by Wolfram Sang
parent c62ebb3d5f
commit 0d7350316a
1 changed files with 4 additions and 0 deletions
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4
drivers/i2c/busses/i2c-stm32f7.c
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@ -476,8 +476,12 @@ static int stm32f7_i2c_compute_timing(struct stm32f7_i2c_dev *i2c_dev,
list_add_tail(&v->node,
&solutions);
break;
}
}
if (p_prev == p)
break;
}
}