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Subject[tip:irq/core] genirq: Get rid of unneeded force parameter in irq_finalize_oneshot()
Commit-ID:  f3f79e38d51f8a419f4c484a86ece4baea35b993
Gitweb: http://git.kernel.org/tip/f3f79e38d51f8a419f4c484a86ece4baea35b993
Author: Alexander Gordeev <agordeev@redhat.com>
AuthorDate: Wed, 21 Mar 2012 17:22:35 +0100
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Thu, 29 Mar 2012 11:31:53 +0200

genirq: Get rid of unneeded force parameter in irq_finalize_oneshot()

The only place irq_finalize_oneshot() is called with force parameter set
is the threaded handler error exit path. But IRQTF_RUNTHREAD is dropped
at this point and irq_wake_thread() is not going to set it again,
since PF_EXITING is set for this thread already. So irq_finalize_oneshot()
will drop the threads bit in threads_oneshot anyway and hence the force
parameter is superfluous.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Link: http://lkml.kernel.org/r/20120321162234.GP24806@dhcp-26-207.brq.redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/irq/manage.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index b0ccd1a..bf606a5 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -645,7 +645,7 @@ static int irq_wait_for_interrupt(struct irqaction *action)
* is marked MASKED.
*/
static void irq_finalize_oneshot(struct irq_desc *desc,
- struct irqaction *action, bool force)
+ struct irqaction *action)
{
if (!(desc->istate & IRQS_ONESHOT))
return;
@@ -679,7 +679,7 @@ again:
* we would clear the threads_oneshot bit of this thread which
* was just set.
*/
- if (!force && test_bit(IRQTF_RUNTHREAD, &action->thread_flags))
+ if (test_bit(IRQTF_RUNTHREAD, &action->thread_flags))
goto out_unlock;

desc->threads_oneshot &= ~action->thread_mask;
@@ -739,7 +739,7 @@ irq_forced_thread_fn(struct irq_desc *desc, struct irqaction *action)

local_bh_disable();
ret = action->thread_fn(action->irq, action->dev_id);
- irq_finalize_oneshot(desc, action, false);
+ irq_finalize_oneshot(desc, action);
local_bh_enable();
return ret;
}
@@ -755,7 +755,7 @@ static irqreturn_t irq_thread_fn(struct irq_desc *desc,
irqreturn_t ret;

ret = action->thread_fn(action->irq, action->dev_id);
- irq_finalize_oneshot(desc, action, false);
+ irq_finalize_oneshot(desc, action);
return ret;
}

@@ -844,7 +844,7 @@ void exit_irq_thread(void)
wake_threads_waitq(desc);

/* Prevent a stale desc->threads_oneshot */
- irq_finalize_oneshot(desc, action, true);
+ irq_finalize_oneshot(desc, action);
}

static void irq_setup_forced_threading(struct irqaction *new)

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