5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
[ Upstream commit 2174f9a8c9db50f74df769edd5a4ab822c73b6d2 ]
As the comment said, 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 when request IRQ.
Fixes: 72cd799544f2 ("[PATCH] I2C: add i2c driver for TPS6501x")
Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240912031530.2211654-1-ruanjinjie@xxxxxxxxxx
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/mfd/tps65010.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/mfd/tps65010.c b/drivers/mfd/tps65010.c
index 65fcc58c02da8..412662f7b9ede 100644
--- a/drivers/mfd/tps65010.c
+++ b/drivers/mfd/tps65010.c
@@ -550,17 +550,13 @@ static int tps65010_probe(struct i2c_client *client,
*/
if (client->irq > 0) {
status = request_irq(client->irq, tps65010_irq,
- IRQF_TRIGGER_FALLING, DRIVER_NAME, tps);
+ IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN,
+ DRIVER_NAME, tps);
if (status < 0) {
dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
client->irq, status);
return status;
}
- /* annoying race here, ideally we'd have an option
- * to claim the irq now and enable it later.
- * FIXME genirq IRQF_NOAUTOEN now solves that ...
- */
- disable_irq(client->irq);
set_bit(FLAG_IRQ_ENABLE, &tps->flags);
} else
dev_warn(&client->dev, "IRQ not configured!\n");
--
2.43.0
