From a0ddc2ec8f2912a738165b0ce47b9d945a9e3709 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Fri, 13 Oct 2017 11:38:00 +0530 Subject: [PATCH] bnxt_re: Fix incorrect usage of test_bit() test_bit() takes a bit number while the 'flags' field in struct bnxt_qplib_rcfw was using actual BIT position converted values. Fix this by assigning bit numbers and use consistent APIs all the flag values. Also logging a message in case of failure. Thanks to Dan Carpenter for pointing this out. Suggested-by: Dan Carpenter Signed-off-by: Somnath Kotur Signed-off-by: Doug Ledford --- drivers/infiniband/hw/bnxt_re/main.c | 5 +++-- drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 8 ++++---- drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 6 +++--- 3 files changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index e7450ea92aa9..87f8a5d5d78f 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -1071,9 +1071,10 @@ static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev) */ rc = bnxt_qplib_alloc_rcfw_channel(rdev->en_dev->pdev, &rdev->rcfw, BNXT_RE_MAX_QPC_COUNT); - if (rc) + if (rc) { + pr_err("Failed to allocate RCFW Channel: %#x\n", rc); goto fail; - + } rc = bnxt_re_net_ring_alloc (rdev, rdev->rcfw.creq.pbl[PBL_LVL_0].pg_map_arr, rdev->rcfw.creq.pbl[rdev->rcfw.creq.level].pg_count, diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c index 000e6a1940b9..6d116146fa3c 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c @@ -168,14 +168,14 @@ static int __send_message(struct bnxt_qplib_rcfw *rcfw, struct cmdq_base *req, rcfw->seq_num++; cmdq_prod = cmdq->prod; - if (rcfw->flags & FIRMWARE_FIRST_FLAG) { + if (test_bit(FIRMWARE_FIRST_FLAG, &rcfw->flags)) { /* The very first doorbell write * is required to set this flag * which prompts the FW to reset * its internal pointers */ - cmdq_prod |= FIRMWARE_FIRST_FLAG; - rcfw->flags &= ~FIRMWARE_FIRST_FLAG; + cmdq_prod |= BIT(FIRMWARE_FIRST_FLAG); + clear_bit(FIRMWARE_FIRST_FLAG, &rcfw->flags); } /* ring CMDQ DB */ @@ -618,7 +618,7 @@ int bnxt_qplib_enable_rcfw_channel(struct pci_dev *pdev, /* General */ rcfw->seq_num = 0; - rcfw->flags = FIRMWARE_FIRST_FLAG; + set_bit(FIRMWARE_FIRST_FLAG, &rcfw->flags); bmap_size = BITS_TO_LONGS(RCFW_MAX_OUTSTANDING_CMD * sizeof(unsigned long)); rcfw->cmdq_bitmap = kzalloc(bmap_size, GFP_KERNEL); diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h index 85b16da287f9..2946a7cfae82 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h @@ -162,9 +162,9 @@ struct bnxt_qplib_rcfw { unsigned long *cmdq_bitmap; u32 bmap_size; unsigned long flags; -#define FIRMWARE_INITIALIZED_FLAG BIT(0) -#define FIRMWARE_FIRST_FLAG BIT(31) -#define FIRMWARE_TIMED_OUT BIT(3) +#define FIRMWARE_INITIALIZED_FLAG 0 +#define FIRMWARE_FIRST_FLAG 31 +#define FIRMWARE_TIMED_OUT 3 wait_queue_head_t waitq; int (*aeq_handler)(struct bnxt_qplib_rcfw *, struct creq_func_event *);