From da4964387d997244b043dd812540bed851c45c9e Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 16 Apr 2012 11:32:17 -0700 Subject: [PATCH] RDMA/ocrdma: Fix warnings about uninitialized variables First, fix drivers/infiniband/hw/ocrdma/ocrdma_verbs.c: In function 'ocrdma_alloc_pd': drivers/infiniband/hw/ocrdma/ocrdma_verbs.c:371:17: warning: 'dpp_page_addr' may be used uninitialized in this function [-Wuninitialized] drivers/infiniband/hw/ocrdma/ocrdma_verbs.c:337:6: note: 'dpp_page_addr' was declared here which seems that it may border on a bug (the call to ocrdma_del_mmap() might conceivably do bad things if pd->dpp_enabled is not set and dpp_page_addr ends up with just the wrong value). Also take care of: drivers/infiniband/hw/ocrdma/ocrdma_hw.c: In function 'ocrdma_init_hw': drivers/infiniband/hw/ocrdma/ocrdma_hw.c:2587:5: warning: 'status' may be used uninitialized in this function [-Wuninitialized] drivers/infiniband/hw/ocrdma/ocrdma_hw.c:2549:17: note: 'status' was declared here which is only real if num_eq == 0, which should be impossible. Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ocrdma/ocrdma_hw.c | 2 +- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c index c53545f1baf6..025c4a9a3d5b 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c @@ -2546,7 +2546,7 @@ static int ocrdma_create_mq_eq(struct ocrdma_dev *dev) static int ocrdma_create_qp_eqs(struct ocrdma_dev *dev) { - int num_eq, i, status; + int num_eq, i, status = 0; int irq; unsigned long flags = 0; diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 51fc9c7c0acf..e955f1f0848d 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -334,7 +334,7 @@ static int ocrdma_copy_pd_uresp(struct ocrdma_pd *pd, { int status; u64 db_page_addr; - u64 dpp_page_addr; + u64 dpp_page_addr = 0; u32 db_page_size; struct ocrdma_alloc_pd_uresp rsp; struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx); @@ -368,7 +368,8 @@ static int ocrdma_copy_pd_uresp(struct ocrdma_pd *pd, return 0; ucopy_err: - ocrdma_del_mmap(pd->uctx, dpp_page_addr, OCRDMA_DPP_PAGE_SIZE); + if (pd->dpp_enabled) + ocrdma_del_mmap(pd->uctx, dpp_page_addr, OCRDMA_DPP_PAGE_SIZE); dpp_map_err: ocrdma_del_mmap(pd->uctx, db_page_addr, db_page_size); return status; -- 2.20.1