diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-03-06 14:03:45 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-03-08 11:06:41 +0100 |
| commit | 1f85b1f5e1f5541272abedc19ba7b6c5b564c228 (patch) | |
| tree | 777fb3cb28164952979aaa23643d353dd52ee92e /kernel/irq/debugfs.c | |
| parent | x86/apic/vector: Force interupt handler invocation to irq context (diff) | |
| download | linux-1f85b1f5e1f5541272abedc19ba7b6c5b564c228.tar.xz linux-1f85b1f5e1f5541272abedc19ba7b6c5b564c228.zip | |
genirq: Add return value to check_irq_resend()
In preparation for an interrupt injection interface which can be used
safely by error injection mechanisms. e.g. PCI-E/ AER, add a return value
to check_irq_resend() so errors can be propagated to the caller.
Split out the software resend code so the ugly #ifdef in check_irq_resend()
goes away and the whole thing becomes readable.
Fix up the caller in debugfs. The caller in irq_startup() does not care
about the return value as this is unconditionally invoked for all
interrupts and the resend is best effort anyway.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lkml.kernel.org/r/20200306130623.775200917@linutronix.de
Diffstat (limited to 'kernel/irq/debugfs.c')
| -rw-r--r-- | kernel/irq/debugfs.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c index d44c8fd17609..0c607798f519 100644 --- a/kernel/irq/debugfs.c +++ b/kernel/irq/debugfs.c @@ -218,8 +218,7 @@ static ssize_t irq_debug_write(struct file *file, const char __user *user_buf, err = -EINVAL; } else { desc->istate |= IRQS_PENDING; - check_irq_resend(desc); - err = 0; + err = check_irq_resend(desc); } raw_spin_unlock_irqrestore(&desc->lock, flags); |