[PATCH 4.14 74/75] i2c: i2c-stm32f7: Fix SDADEL minimum formula

[Greg Kroah-Hartman]

From: Nicolas Le Bayon <nicolas.le.bayon@xxxxxx>

commit c86da50cfd840edf223a242580913692acddbcf6 upstream.

It conforms with Reference Manual I2C timing section.

Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@xxxxxx>
Signed-off-by: Bich Hemon <bich.hemon@xxxxxx>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@xxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/i2c/busses/i2c-stm32f7.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -340,7 +340,7 @@ static int stm32f7_i2c_compute_timing(st
 		 STM32F7_I2C_ANALOG_FILTER_DELAY_MAX : 0);
 	dnf_delay = setup->dnf * i2cclk;
 
-	sdadel_min = setup->fall_time - i2c_specs[setup->speed].hddat_min -
+	sdadel_min = i2c_specs[setup->speed].hddat_min + setup->fall_time -
 		af_delay_min - (setup->dnf + 3) * i2cclk;
 
 	sdadel_max = i2c_specs[setup->speed].vddat_max - setup->rise_time -