[PATCH] i2c: i2c-stm32f7: improve loopback in timing algorithm

[Bich HEMON]

From: Nicolas Le Bayon <nicolas.le.ba...@st.com>

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.ba...@st.com>
Signed-off-by: Bich Hemon <bich.he...@st.com>
---
 drivers/i2c/busses/i2c-stm32f7.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
index 4284fc9..48337be 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -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;
                }
        }
 
-- 
1.9.1