diff mbox series

[v4,10/12] Input: cyttsp - request_irq by IRQF_NO_AUTOEN and remove disable_irq

Message ID 20210128223538.20272-11-song.bao.hua@hisilicon.com
State New
Headers show
Series add IRQF_NO_AUTOEN for request_irq | expand

Commit Message

Song Bao Hua (Barry Song) Jan. 28, 2021, 10:35 p.m. UTC 
disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable because of requesting.

Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
---
 drivers/input/touchscreen/cyttsp_core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c
index 73c854f35f33..d5c933604168 100644
--- a/drivers/input/touchscreen/cyttsp_core.c
+++ b/drivers/input/touchscreen/cyttsp_core.c
@@ -652,7 +652,8 @@  struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
 	}
 
 	error = devm_request_threaded_irq(dev, ts->irq, NULL, cyttsp_irq,
-					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
+					  IRQF_NO_AUTOEN,
 					  "cyttsp", ts);
 	if (error) {
 		dev_err(ts->dev, "failed to request IRQ %d, err: %d\n",
@@ -660,8 +661,6 @@  struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
 		return ERR_PTR(error);
 	}
 
-	disable_irq(ts->irq);
-
 	cyttsp_hard_reset(ts);
 
 	error = cyttsp_power_on(ts);