linux-kernel - [PATCH] ib/ehca: bitmask handling for lock

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Message-ID: <20100610110653.17885a81@alex-laptop>
Date:	Thu, 10 Jun 2010 11:06:53 +0200
From:	Alexander Schmidt <alexs@...ux.vnet.ibm.com>
To:	Roland Dreier <rdreier@...co.com>,
	Linux RDMA <linux-rdma@...r.kernel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Stefan Roscher <stefan.roscher@...ibm.com>,
	Joachim Fenkes <fenkes@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	Hoang-Nam Nguyen <HNGUYEN@...ux.vnet.ibm.com>
Subject: [PATCH] ib/ehca: bitmask handling for lock_hcalls

Fix reading capability bit from device capabilities for hcall locking.

Signed-off-by: Alexander Schmidt <alexs@...ux.vnet.ibm.com>
---

Hi Roland, this applies against 2.6.35-rc2 and we would like to get
it into your -next tree, thanks!

 drivers/infiniband/hw/ehca/ehca_main.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.35-rc2.orig/drivers/infiniband/hw/ehca/ehca_main.c
+++ linux-2.6.35-rc2/drivers/infiniband/hw/ehca/ehca_main.c
@@ -360,7 +360,8 @@ static int ehca_sense_attributes(struct 
 	 * a firmware property, so it's valid across all adapters
 	 */
 	if (ehca_lock_hcalls == -1)
-		ehca_lock_hcalls = !(shca->hca_cap & HCA_CAP_H_ALLOC_RES_SYNC);
+		ehca_lock_hcalls = !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC,
+					shca->hca_cap);
 
 	/* translate supported MR page sizes; always support 4K */
 	shca->hca_cap_mr_pgsize = EHCA_PAGESIZE;
--
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