From 8e9f04a7c744bb18c193779d04cc5d8d4c21dd11 Mon Sep 17 00:00:00 2001 From: Chien Tin Tung Date: Fri, 22 Apr 2016 14:14:24 -0500 Subject: [PATCH] RDMA/i40iw: Correct STag mask to min of 14 bits STag index mask is calculated incorrectly, missing the 14 bits minimum requirement. Add max macro to use either # of MRs or 14 bits in the mask size calculation. Signed-off-by: Tatyana Nikolova Signed-off-by: Faisal Latif Signed-off-by: Doug Ledford --- drivers/infiniband/hw/i40iw/i40iw_hw.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/i40iw/i40iw_hw.c b/drivers/infiniband/hw/i40iw/i40iw_hw.c index 615e115247b0..3ee0cad96bc6 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_hw.c +++ b/drivers/infiniband/hw/i40iw/i40iw_hw.c @@ -107,7 +107,8 @@ u32 i40iw_initialize_hw_resources(struct i40iw_device *iwdev) spin_lock_init(&iwdev->resource_lock); spin_lock_init(&iwdev->qptable_lock); - mrdrvbits = 24 - get_count_order(iwdev->max_mr); + /* stag index mask has a minimum of 14 bits */ + mrdrvbits = 24 - max(get_count_order(iwdev->max_mr), 14); iwdev->mr_stagmask = ~(((1 << mrdrvbits) - 1) << (32 - mrdrvbits)); return 0; } -- 2.39.5