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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>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Nicolas Le Bayon 2019-04-18 17:32:43 +02:00 committed by Patrice Chotard
parent e87da7521f
commit 5237f37e5c
1 changed files with 4 additions and 0 deletions
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4
drivers/i2c/stm32f7_i2c.c
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@ -540,8 +540,12 @@ static int stm32_i2c_compute_solutions(struct stm32_i2c_setup *setup,
p_prev = p;
list_add_tail(&v->node, solutions);
break;
}
}
if (p_prev == p)
break;
}
}