lkml.org 
[lkml]   [2007]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2.6.21 1/4] ehca: fix improper use of yield with spinlock held
Date
Here is a patch for ehca_cq.c that fixes improper use of yield
with spinlock held.
Thanks
Nam


Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
---


ehca_cq.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)


diff -Nurp infiniband_orig/drivers/infiniband/hw/ehca/ehca_cq.c infiniband_work/drivers/infiniband/hw/ehca/ehca_cq.c
--- infiniband_orig/drivers/infiniband/hw/ehca/ehca_cq.c 2007-01-19 19:40:32.000000000 +0100
+++ infiniband_work/drivers/infiniband/hw/ehca/ehca_cq.c 2007-01-20 00:15:34.000000000 +0100
@@ -344,8 +344,11 @@ int ehca_destroy_cq(struct ib_cq *cq)
unsigned long flags;

spin_lock_irqsave(&ehca_cq_idr_lock, flags);
- while (my_cq->nr_callbacks)
+ while (my_cq->nr_callbacks) {
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
yield();
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ }

idr_remove(&ehca_cq_idr, my_cq->token);
spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2007-01-24 01:01    [W:0.037 / U:0.360 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site