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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2022-02-11 19:14:55 +0100
committerWolfram Sang <wsa@kernel.org>2022-03-01 15:58:41 +0100
commit68ea1b2c3386ad484b7daa4a64fa7b3be661607f (patch)
tree1e367c0d36087c54d2821b1d261b7af55d9401f5 /drivers
parent24e3bb7429bde31e9a28a46ca2fd6deaab257c30 (diff)
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 <below@judiz.de> Link: https://bugs.debian.org/1002537 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/i2c/i2c-core-base.c2
1 files changed, 1 insertions, 1 deletions
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;
}