]> err.no Git - linux-2.6/commit
IB/mthca: Clear ICM pages before handing to FW
authorEli Cohen <eli@mellanox.co.il>
Mon, 23 Jun 2008 16:29:58 +0000 (09:29 -0700)
committerRoland Dreier <rolandd@cisco.com>
Mon, 23 Jun 2008 16:29:58 +0000 (09:29 -0700)
commit87afd448b186c885d67a08b7417cd46253b6a9d6
tree763ae0a3f10879482ad414c192ac2be4d60a2b90
parentf9d1c6ca2bb1bbfde4a95d9e55ab3b0126825295
IB/mthca: Clear ICM pages before handing to FW

Current memfree FW has a bug which in some cases, assumes that ICM
pages passed to it are cleared.  This patch uses __GFP_ZERO to
allocate all ICM pages passed to the FW.  Once firmware with a fix is
released, we can make the workaround conditional on firmware version.

This fixes the bug reported by Arthur Kepner <akepner@sgi.com> here:
http://lists.openfabrics.org/pipermail/general/2008-May/050026.html

Cc: <stable@kernel.org>
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
[ Rewritten to be a one-liner using __GFP_ZERO instead of vmap()ing
  ICM memory and memset()ing it to 0. - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/hw/mthca/mthca_memfree.c