From 68ea1b2c3386ad484b7daa4a64fa7b3be661607f Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 11 Feb 2022 19:14:55 +0100 Subject: i2c: core: Use generic_handle_irq_safe() in i2c_handle_smbus_host_notify(). The i2c-i801 driver invokes i2c_handle_smbus_host_notify() from his interrupt service routine. On PREEMPT_RT i2c-i801's handler is forced threaded with enabled interrupts which leads to a warning by handle_irq_event_percpu() assuming that irq_default_primary_handler() enabled interrupts. i2c-i801's interrupt handler can't be made non-threaded because the interrupt line is shared with other devices. Use generic_handle_irq_safe() which can invoked with disabled and enabled interrupts. Reported-by: Michael Below Link: https://bugs.debian.org/1002537 Signed-off-by: Sebastian Andrzej Siewior Reviewed-by: Oleksandr Natalenko Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-core-base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 32a45260c1f3..d43db2c3876e 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1424,7 +1424,7 @@ int i2c_handle_smbus_host_notify(struct i2c_adapter *adap, unsigned short addr) if (irq <= 0) return -ENXIO; - generic_handle_irq(irq); + generic_handle_irq_safe(irq); return 0; } -- cgit v1.2.3-59-g8ed1b