[U-Boot] [PATCH 08/16] i2c: stm32f7: improve loopback in timing algorithm

[Patrick Delaunay]

From: Nicolas Le Bayon <nicolas.le.bayon at 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.bayon at st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay at st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 drivers/i2c/stm32f7_i2c.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/i2c/stm32f7_i2c.c b/drivers/i2c/stm32f7_i2c.c
index e7e0268..50c4fd0 100644
--- a/drivers/i2c/stm32f7_i2c.c
+++ b/drivers/i2c/stm32f7_i2c.c
@@ -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;
 		}
 	}
 
-- 
2.7.4