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[v2,2/5] Input: iqs269a - increase interrupt handler return delay

Message ID Y7Rs484ypy4dab5G@nixie71 (mailing list archive)
State Mainlined
Commit e023cc4abde3c01b895660b0e5a8488deb36b8c1
Headers show
Series Miscellaneous fixes for Azoteq IQS269A | expand

Commit Message

Jeff LaBundy Jan. 3, 2023, 5:58 p.m. UTC 
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>
---
Changes in v2:
 - Added Reviewed-by

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

Patch

diff --git a/drivers/input/misc/iqs269a.c b/drivers/input/misc/iqs269a.c
index ea3c97c5f764..ea3401a1000f 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,