From e023cc4abde3c01b895660b0e5a8488deb36b8c1 Mon Sep 17 00:00:00 2001
From: Jeff LaBundy <jeff@labundy.com>
Date: Tue, 3 Jan 2023 11:58:59 -0600
Subject: [PATCH] Input: iqs269a - increase interrupt handler return delay
Git-commit: e023cc4abde3c01b895660b0e5a8488deb36b8c1
Patch-mainline: v6.3-rc1
References: git-fixes

The time the device takes to deassert its RDY output following an
I2C stop condition scales with the core clock frequency.

To prevent level-triggered interrupts from being reasserted after
the interrupt handler returns, increase the time before returning
to account for the worst-case delay (~140 us) plus margin.

Fixes: 04e49867fad1 ("Input: add support for Azoteq IQS269A")
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/Y7Rs484ypy4dab5G@nixie71
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/input/misc/iqs269a.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/misc/iqs269a.c b/drivers/input/misc/iqs269a.c
index 7cda4a9a8560..e299b22b6fdb 100644
--- a/drivers/input/misc/iqs269a.c
+++ b/drivers/input/misc/iqs269a.c
@@ -153,7 +153,7 @@
 #define IQS269_PWR_MODE_POLL_SLEEP_US		IQS269_ATI_POLL_SLEEP_US
 #define IQS269_PWR_MODE_POLL_TIMEOUT_US		IQS269_ATI_POLL_TIMEOUT_US
 
-#define iqs269_irq_wait()			usleep_range(100, 150)
+#define iqs269_irq_wait()			usleep_range(200, 250)
 
 enum iqs269_local_cap_size {
 	IQS269_LOCAL_CAP_SIZE_0,
-- 
2.35.3