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