Kumar Sanghvi 581bbe2cd0 RDMA/cxgb4: Serialize calls to CQ's comp_handler ... Commit 01e7da6ba5 ("RDMA/cxgb4: Make sure flush CQ entries are collected on connection close") introduced a potential problem where a CQ's comp_handler can get called simultaneously from different places in the iw_cxgb4 driver. This does not comply with Documentation/infiniband/core_locking.txt, which states that at a given point of time, there should be only one callback per CQ should be active. This problem was reported by Parav Pandit <Parav.Pandit@Emulex.Com>. Based on discussion between Parav Pandit and Steve Wise, this patch fixes the above problem by serializing the calls to a CQ's comp_handler using a spin_lock. Reported-by: Parav Pandit <Parav.Pandit@Emulex.Com> Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>		2011-10-31 11:34:53 -07:00
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amso1100	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2011-07-22 14:50:12 -07:00
cxgb3	[SCSI] cxgb3i: convert cdev->l2opt to use rcu to prevent NULL dereference	2011-09-26 09:28:01 -05:00
cxgb4	RDMA/cxgb4: Serialize calls to CQ's comp_handler	2011-10-31 11:34:53 -07:00
ehca	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
ipath	Merge branches 'cma', 'cxgb4', 'ipath', 'misc', 'mlx4', 'mthca', 'qib' and 'srp' into for-next	2011-07-22 11:56:11 -07:00
mlx4	IB/mlx4: Support PMA counters for IBoE	2011-07-18 21:04:36 -07:00
mthca	IB/mthca: Remove unnecessary read of PCI_CAP_ID_EXP	2011-07-18 12:01:22 -07:00
nes	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
qib	Merge branches 'cma', 'cxgb4', 'ipath', 'misc', 'mlx4', 'mthca', 'qib' and 'srp' into for-next	2011-07-22 11:56:11 -07:00