The delay is retrieved from a device-tree property, so the duration is
variable. fsleep guesses the best delay function based on duration.

Link: https://www.kernel.org/doc/html/latest/timers/timers-howto.html

Signed-off-by: Markus Burri <markus.burri@mt.com>
Reviewed-by: Manuel Traut <manuel.traut@mt.com>
Tested-by: HeDong Zhao <hedong.zhao@mt.com>
---
 drivers/input/keyboard/matrix_keypad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index a2ec9f6..e08d7d5 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -69,7 +69,7 @@ static void activate_col(struct matrix_keypad *keypad, int col, bool on)
 	__activate_col(keypad, col, on);
 
 	if (on && keypad->col_scan_delay_us)
-		udelay(keypad->col_scan_delay_us);
+		fsleep(keypad->col_scan_delay_us);
 }
 
 static void activate_all_cols(struct matrix_keypad *keypad, bool on)
-- 
2.39.5