[PATCH 5.10 236/529] Input: iqs269a - increase interrupt handler return delay

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Jeff LaBundy <jeff@xxxxxxxxxxx>

[ Upstream commit e023cc4abde3c01b895660b0e5a8488deb36b8c1 ]

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@xxxxxxxxxxx>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/Y7Rs484ypy4dab5G@nixie71
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 ea3c97c5f764f..ea3401a1000f0 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,
-- 
2.39.2






[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux