From 361fa055f1ef475ca9f9bdf88884fd128273366e Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 26 Sep 2017 09:57:12 -0700 Subject: [PATCH] Input: sa1111ps2 - extend test delay A 2us delay is too small for the bus to settle after writing to the register. Extend to 10us which gives more reliable results. Signed-off-by: Russell King Signed-off-by: Dmitry Torokhov --- drivers/input/serio/sa1111ps2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c index f1c036260d25..f9e5c793f4f0 100644 --- a/drivers/input/serio/sa1111ps2.c +++ b/drivers/input/serio/sa1111ps2.c @@ -212,7 +212,7 @@ static unsigned int ps2_test_one(struct ps2if *ps2if, writel_relaxed(PS2CR_ENA | mask, ps2if->base + PS2CR); - udelay(2); + udelay(10); val = readl_relaxed(ps2if->base + PS2STAT); return val & (PS2STAT_KBC | PS2STAT_KBD); -- 2.30.2