From 249f06561fc333581e48e6d388a56e3d100d23b6 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 3 Jun 2016 11:39:35 -0700 Subject: IB/srp: Always initialize use_fast_reg and use_fmr Avoid that mapping fails due to use_fast_reg != 0 or use_fmr != 0 if both member variables should be zero (if never_register == 1 or if neither FMR nor FR is supported). Remove an initialization that became superfluous due to changing a kmalloc() into a kzalloc() call. Fixes: 509c5f33f4f6 ("IB/srp: Prevent mapping failures") Cc: Sagi Grimberg Cc: Christoph Hellwig Cc: Laurence Oberman Signed-off-by: Bart Van Assche Reviewed-by: Leon Romanovsky Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Doug Ledford --- drivers/infiniband/ulp/srp/ib_srp.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/infiniband/ulp/srp/ib_srp.c') diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 646de170ec12..bc24b8d32ce6 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -3526,7 +3526,7 @@ static void srp_add_one(struct ib_device *device) int mr_page_shift, p; u64 max_pages_per_mr; - srp_dev = kmalloc(sizeof *srp_dev, GFP_KERNEL); + srp_dev = kzalloc(sizeof(*srp_dev), GFP_KERNEL); if (!srp_dev) return; @@ -3586,8 +3586,6 @@ static void srp_add_one(struct ib_device *device) IB_ACCESS_REMOTE_WRITE); if (IS_ERR(srp_dev->global_mr)) goto err_pd; - } else { - srp_dev->global_mr = NULL; } for (p = rdma_start_port(device); p <= rdma_end_port(device); ++p) { -- cgit v1.2.3 From 9edba790fc52322051fd7b6589421021f0726483 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 3 Jun 2016 11:40:24 -0700 Subject: IB/srp: Fix srp_map_sg_dma() Because patch "IB/srp: Move common code into the caller" was applied partially srp_map_sg_dma() doesn't work properly. Fix this by applying the remainder of that patch. See also http://thread.gmane.org/gmane.linux.drivers.rdma/35803/focus=35811. Fixes: 3849e44d1c4b ("IB/srp: Move common code into the caller") Signed-off-by: Bart Van Assche Cc: Mike Marciniszyn Cc: Sagi Grimberg Cc: Christoph Hellwig Cc: Laurence Oberman Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Doug Ledford --- drivers/infiniband/ulp/srp/ib_srp.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/infiniband/ulp/srp/ib_srp.c') diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index bc24b8d32ce6..3322ed750172 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1457,7 +1457,6 @@ static int srp_map_sg_fr(struct srp_map_state *state, struct srp_rdma_ch *ch, { unsigned int sg_offset = 0; - state->desc = req->indirect_desc; state->fr.next = req->fr_list; state->fr.end = req->fr_list + ch->target->mr_per_cmd; state->sg = scat; @@ -1489,7 +1488,6 @@ static int srp_map_sg_dma(struct srp_map_state *state, struct srp_rdma_ch *ch, struct scatterlist *sg; int i; - state->desc = req->indirect_desc; for_each_sg(scat, sg, count, i) { srp_map_desc(state, ib_sg_dma_address(dev->dev, sg), ib_sg_dma_len(dev->dev, sg), @@ -1655,6 +1653,7 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_rdma_ch *ch, target->indirect_size, DMA_TO_DEVICE); memset(&state, 0, sizeof(state)); + state.desc = req->indirect_desc; if (dev->use_fast_reg) ret = srp_map_sg_fr(&state, ch, req, scat, count); else if (dev->use_fmr) -- cgit v1.2.3