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| author | Jinjie Ruan <ruanjinjie@huawei.com> | 2024-09-12 11:15:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 19:53:35 +0100 |
| commit | c9294079187fc8e67c04374a06b0fd61728b4485 (patch) | |
| tree | 9f90005f63f5f1bc67362000e44cfdf4035a0388 /drivers/mfd | |
| parent | ccfbcc7d555d7a1b91d0c1b11af692af8c3c7b40 (diff) | |
| download | linux-c9294079187fc8e67c04374a06b0fd61728b4485.tar.gz linux-c9294079187fc8e67c04374a06b0fd61728b4485.tar.bz2 linux-c9294079187fc8e67c04374a06b0fd61728b4485.zip | |
mfd: tps65010: Use IRQF_NO_AUTOEN flag in request_irq() to fix race
[ 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@huawei.com>
Link: https://lore.kernel.org/r/20240912031530.2211654-1-ruanjinjie@huawei.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/tps65010.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/mfd/tps65010.c b/drivers/mfd/tps65010.c index c2afa2e69f42..35ddffb96ba1 100644 --- a/drivers/mfd/tps65010.c +++ b/drivers/mfd/tps65010.c @@ -548,17 +548,13 @@ 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"); |