]> git.baikalelectronics.ru Git - kernel.git/commit
RDMA/cxgb3: Fix shift calc in build_phys_page_list() for 1-entry page lists
authorBryan Rosenburg <rosnbrg@us.ibm.com>
Wed, 20 Feb 2008 23:31:48 +0000 (17:31 -0600)
committerRoland Dreier <rolandd@cisco.com>
Tue, 26 Feb 2008 00:00:29 +0000 (16:00 -0800)
commita496c9d7b5cdd6df25a683ab05168b306d6feae8
tree6b09634809c71b5bbd1141413d5a324e0f4de7c4
parent43f675f1ef5519737391c36495b999a9b028786a
RDMA/cxgb3: Fix shift calc in build_phys_page_list() for 1-entry page lists

A single entry (addr 0x10001000, size 0x2000) will get converted to
page address 0x10000000 with a page size of 0x4000.  The code as it
stands doesn't address the single buffer case, but in fact it allows
the subsequent single-buffer special case to be eliminated entirely.
Because the mask now includes the (page adjusted) starting and ending
addresses, the general case works for the single buffer case as well.

Signed-off-by: Bryan Rosenburg <rosnbrg@us.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/hw/cxgb3/iwch_mem.c