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From: Alexander Schmidt <alexs-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>,
	Linux RDMA <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Cc: lkml <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Stefan Roscher
	<stefan.roscher-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Joachim Fenkes <fenkes-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Christoph Raisch <raisch-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Hoang-Nam Nguyen
	<HNGUYEN-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
	David Wilder <wilder-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Subject: [PATCH 1/2] ib/ehca: Do not turn off irqs in tasklet context
Date: Wed, 27 Jan 2010 18:01:56 +0100	[thread overview]
Message-ID: <20100127180156.795056a5@alex-laptop> (raw)
In-Reply-To: <20100127180035.779b24d1@alex-laptop>

The irq_spinlock is only taken in tasklet context, so it is safe not to
disable hardware interrupts.

Signed-off-by: Alexander Schmidt <alexs-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
 drivers/infiniband/hw/ehca/ehca_irq.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- linux-2.6.orig/drivers/infiniband/hw/ehca/ehca_irq.c
+++ linux-2.6/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -548,11 +548,10 @@ void ehca_process_eq(struct ehca_shca *s
 	struct ehca_eq *eq = &shca->eq;
 	struct ehca_eqe_cache_entry *eqe_cache = eq->eqe_cache;
 	u64 eqe_value, ret;
-	unsigned long flags;
 	int eqe_cnt, i;
 	int eq_empty = 0;
 
-	spin_lock_irqsave(&eq->irq_spinlock, flags);
+	spin_lock(&eq->irq_spinlock);
 	if (is_irq) {
 		const int max_query_cnt = 100;
 		int query_cnt = 0;
@@ -643,7 +642,7 @@ void ehca_process_eq(struct ehca_shca *s
 	} while (1);
 
 unlock_irq_spinlock:
-	spin_unlock_irqrestore(&eq->irq_spinlock, flags);
+	spin_unlock(&eq->irq_spinlock);
 }
 
 void ehca_tasklet_eq(unsigned long data)
--
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  reply	other threads:[~2010-01-27 17:01 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-27 17:00 [PATCH 0/2] ib/ehca: fixes for -next Alexander Schmidt
2010-01-27 17:01 ` Alexander Schmidt [this message]
2010-01-27 17:03 ` [PATCH 2/2] ib/ehca: allow access for ib_query_qp() Alexander Schmidt
2010-02-12 23:25   ` Roland Dreier

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