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author | David S. Miller <davem@davemloft.net> | 2015-07-23 00:41:16 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2015-07-23 00:41:16 -0700 |
commit | c5e40ee287db61a79af1746954ee03ebbf1ff8a3 (patch) | |
tree | 007da00e75e9b84766ac4868421705300e1e2e14 /kernel/irq | |
parent | 052831879945be0d9fad2216b127147c565ec1b1 (diff) | |
parent | c5dfd654d0ec0a28fe81e7bd4d4fd984a9855e09 (diff) | |
download | linux-stable-c5e40ee287db61a79af1746954ee03ebbf1ff8a3.tar.gz linux-stable-c5e40ee287db61a79af1746954ee03ebbf1ff8a3.tar.bz2 linux-stable-c5e40ee287db61a79af1746954ee03ebbf1ff8a3.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
net/bridge/br_mdb.c
br_mdb.c conflict was a function call being removed to fix a bug in
'net' but whose signature was changed in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/irq')
-rw-r--r-- | kernel/irq/resend.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index 9065107f083e..7a5237a1bce5 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -75,13 +75,21 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq) !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) { #ifdef CONFIG_HARDIRQS_SW_RESEND /* - * If the interrupt has a parent irq and runs - * in the thread context of the parent irq, - * retrigger the parent. + * If the interrupt is running in the thread + * context of the parent irq we need to be + * careful, because we cannot trigger it + * directly. */ - if (desc->parent_irq && - irq_settings_is_nested_thread(desc)) + if (irq_settings_is_nested_thread(desc)) { + /* + * If the parent_irq is valid, we + * retrigger the parent, otherwise we + * do nothing. + */ + if (!desc->parent_irq) + return; irq = desc->parent_irq; + } /* Set it pending and activate the softirq: */ set_bit(irq, irqs_resend); tasklet_schedule(&resend_tasklet); |