From 81f75bbf67c7a26ea1266ac93b9319bb985d588d Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 03:37:31 +0000 Subject: bnx2x: Reset HW before use To avoid complications, make sure that the HW is in reset (as it should be) before trying to take it out of reset. In normal flows, the HW is indeed in rest so this should have no effect Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 074374ff93f3..ed8b34665931 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -5148,12 +5148,21 @@ static void enable_blocks_attention(struct bnx2x *bp) } +static void bnx2x_reset_common(struct bnx2x *bp) +{ + /* reset_common */ + REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR, + 0xd3ffff7f); + REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR, 0x1403); +} + static int bnx2x_init_common(struct bnx2x *bp) { u32 val, i; DP(BNX2X_MSG_MCP, "starting common init func %d\n", BP_FUNC(bp)); + bnx2x_reset_common(bp); REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, 0xffffffff); REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_SET, 0xfffc); @@ -6640,14 +6649,6 @@ static void bnx2x_reset_port(struct bnx2x *bp) /* TODO: Close Doorbell port? */ } -static void bnx2x_reset_common(struct bnx2x *bp) -{ - /* reset_common */ - REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR, - 0xd3ffff7f); - REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR, 0x1403); -} - static void bnx2x_reset_chip(struct bnx2x *bp, u32 reset_code) { DP(BNX2X_MSG_MCP, "function %d reset_code %x\n", -- cgit v1.2.2 From e94d8af3da79f4bfbd22819d28ecf0602456f06f Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 03:37:36 +0000 Subject: bnx2x: Disable napi Calling napi disabled unconditionally at netif stop Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index ed8b34665931..860b9f8ddd30 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -6143,8 +6143,8 @@ static void bnx2x_netif_start(struct bnx2x *bp) static void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw) { bnx2x_int_disable_sync(bp, disable_hw); + bnx2x_napi_disable(bp); if (netif_running(bp->dev)) { - bnx2x_napi_disable(bp); netif_tx_disable(bp->dev); bp->dev->trans_start = jiffies; /* prevent tx timeout */ } @@ -6689,8 +6689,7 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode) bnx2x_set_storm_rx_mode(bp); bnx2x_netif_stop(bp, 1); - if (!netif_running(bp->dev)) - bnx2x_napi_disable(bp); + del_timer_sync(&bp->timer); SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb, (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq)); -- cgit v1.2.2 From 2dfe0e1fecb582b4aae7f2490904864c05472f3a Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 03:37:44 +0000 Subject: bnx2x: Handling load failures Failures on load were not handled correctly - separate the flow to handle different failures Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 154 +++++++++++++++++++++++++++-------------------- 1 file changed, 88 insertions(+), 66 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 860b9f8ddd30..707c4bbe46a4 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -6328,7 +6328,7 @@ static void bnx2x_set_rx_mode(struct net_device *dev); static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) { u32 load_code; - int i, rc; + int i, rc = 0; #ifdef BNX2X_STOP_ON_ERROR if (unlikely(bp->panic)) return -EPERM; @@ -6336,48 +6336,6 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD; - /* Send LOAD_REQUEST command to MCP - Returns the type of LOAD command: - if it is the first port to be initialized - common blocks should be initialized, otherwise - not - */ - if (!BP_NOMCP(bp)) { - load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ); - if (!load_code) { - BNX2X_ERR("MCP response failure, aborting\n"); - return -EBUSY; - } - if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) - return -EBUSY; /* other port in diagnostic mode */ - - } else { - int port = BP_PORT(bp); - - DP(NETIF_MSG_IFUP, "NO MCP load counts before us %d, %d, %d\n", - load_count[0], load_count[1], load_count[2]); - load_count[0]++; - load_count[1 + port]++; - DP(NETIF_MSG_IFUP, "NO MCP new load counts %d, %d, %d\n", - load_count[0], load_count[1], load_count[2]); - if (load_count[0] == 1) - load_code = FW_MSG_CODE_DRV_LOAD_COMMON; - else if (load_count[1 + port] == 1) - load_code = FW_MSG_CODE_DRV_LOAD_PORT; - else - load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION; - } - - if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || - (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) - bp->port.pmf = 1; - else - bp->port.pmf = 0; - DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf); - - /* if we can't use MSI-X we only need one fp, - * so try to enable MSI-X with the requested number of fp's - * and fallback to inta with one fp - */ if (use_inta) { bp->num_queues = 1; @@ -6392,7 +6350,15 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) else bp->num_queues = 1; - if (bnx2x_enable_msix(bp)) { + DP(NETIF_MSG_IFUP, + "set number of queues to %d\n", bp->num_queues); + + /* if we can't use MSI-X we only need one fp, + * so try to enable MSI-X with the requested number of fp's + * and fallback to MSI or legacy INTx with one fp + */ + rc = bnx2x_enable_msix(bp); + if (rc) { /* failed to enable MSI-X */ bp->num_queues = 1; if (use_multi) @@ -6400,8 +6366,6 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) " to enable MSI-X\n"); } } - DP(NETIF_MSG_IFUP, - "set number of queues to %d\n", bp->num_queues); if (bnx2x_alloc_mem(bp)) return -ENOMEM; @@ -6410,30 +6374,85 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) bnx2x_fp(bp, i, disable_tpa) = ((bp->flags & TPA_ENABLE_FLAG) == 0); + for_each_queue(bp, i) + netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi), + bnx2x_poll, 128); + +#ifdef BNX2X_STOP_ON_ERROR + for_each_queue(bp, i) { + struct bnx2x_fastpath *fp = &bp->fp[i]; + + fp->poll_no_work = 0; + fp->poll_calls = 0; + fp->poll_max_calls = 0; + fp->poll_complete = 0; + fp->poll_exit = 0; + } +#endif + bnx2x_napi_enable(bp); + if (bp->flags & USING_MSIX_FLAG) { rc = bnx2x_req_msix_irqs(bp); if (rc) { pci_disable_msix(bp->pdev); - goto load_error; + goto load_error1; } + printk(KERN_INFO PFX "%s: using MSI-X\n", bp->dev->name); } else { bnx2x_ack_int(bp); rc = bnx2x_req_irq(bp); if (rc) { - BNX2X_ERR("IRQ request failed, aborting\n"); - goto load_error; + BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc); + goto load_error1; } } - for_each_queue(bp, i) - netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi), - bnx2x_poll, 128); + /* Send LOAD_REQUEST command to MCP + Returns the type of LOAD command: + if it is the first port to be initialized + common blocks should be initialized, otherwise - not + */ + if (!BP_NOMCP(bp)) { + load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ); + if (!load_code) { + BNX2X_ERR("MCP response failure, aborting\n"); + rc = -EBUSY; + goto load_error2; + } + if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) { + rc = -EBUSY; /* other port in diagnostic mode */ + goto load_error2; + } + + } else { + int port = BP_PORT(bp); + + DP(NETIF_MSG_IFUP, "NO MCP load counts before us %d, %d, %d\n", + load_count[0], load_count[1], load_count[2]); + load_count[0]++; + load_count[1 + port]++; + DP(NETIF_MSG_IFUP, "NO MCP new load counts %d, %d, %d\n", + load_count[0], load_count[1], load_count[2]); + if (load_count[0] == 1) + load_code = FW_MSG_CODE_DRV_LOAD_COMMON; + else if (load_count[1 + port] == 1) + load_code = FW_MSG_CODE_DRV_LOAD_PORT; + else + load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION; + } + + if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || + (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) + bp->port.pmf = 1; + else + bp->port.pmf = 0; + DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf); /* Initialize HW */ rc = bnx2x_init_hw(bp, load_code); if (rc) { BNX2X_ERR("HW init failed, aborting\n"); - goto load_int_disable; + goto load_error2; } /* Setup NIC internals and enable interrupts */ @@ -6445,7 +6464,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) if (!load_code) { BNX2X_ERR("MCP response failure, aborting\n"); rc = -EBUSY; - goto load_rings_free; + goto load_error3; } } @@ -6454,7 +6473,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) rc = bnx2x_setup_leading(bp); if (rc) { BNX2X_ERR("Setup leading failed!\n"); - goto load_netif_stop; + goto load_error3; } if (CHIP_IS_E1H(bp)) @@ -6467,7 +6486,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) for_each_nondefault_queue(bp, i) { rc = bnx2x_setup_multi(bp, i); if (rc) - goto load_netif_stop; + goto load_error3; } if (CHIP_IS_E1(bp)) @@ -6483,18 +6502,18 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) case LOAD_NORMAL: /* Tx queue should be only reenabled */ netif_wake_queue(bp->dev); + /* Initialize the receive filter. */ bnx2x_set_rx_mode(bp->dev); break; case LOAD_OPEN: netif_start_queue(bp->dev); + /* Initialize the receive filter. */ bnx2x_set_rx_mode(bp->dev); - if (bp->flags & USING_MSIX_FLAG) - printk(KERN_INFO PFX "%s: using MSI-X\n", - bp->dev->name); break; case LOAD_DIAG: + /* Initialize the receive filter. */ bnx2x_set_rx_mode(bp->dev); bp->state = BNX2X_STATE_DIAG; break; @@ -6512,20 +6531,23 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode) return 0; -load_netif_stop: - bnx2x_napi_disable(bp); -load_rings_free: +load_error3: + bnx2x_int_disable_sync(bp, 1); + if (!BP_NOMCP(bp)) { + bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP); + bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE); + } + bp->port.pmf = 0; /* Free SKBs, SGEs, TPA pool and driver internals */ bnx2x_free_skbs(bp); for_each_queue(bp, i) bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); -load_int_disable: - bnx2x_int_disable_sync(bp, 1); +load_error2: /* Release IRQs */ bnx2x_free_irq(bp); -load_error: +load_error1: + bnx2x_napi_disable(bp); bnx2x_free_mem(bp); - bp->port.pmf = 0; /* TBD we really need to reset the chip if we want to recover from this */ -- cgit v1.2.2 From 6eccabb301d442e6106ecc84b07a976c2816d9fb Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 03:37:48 +0000 Subject: bnx2x: Carrier off first call Call carrier off should not be called after register_netdev since after register netdev open can be called at any time followed by an interrupt that will set it to carrier_on and the probe will resume control and set it to off Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 707c4bbe46a4..fbd71659cca6 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -9827,6 +9827,8 @@ static int bnx2x_open(struct net_device *dev) { struct bnx2x *bp = netdev_priv(dev); + netif_carrier_off(dev); + bnx2x_set_power_state(bp, PCI_D0); return bnx2x_nic_load(bp, LOAD_OPEN); @@ -10332,8 +10334,6 @@ static int __devinit bnx2x_init_one(struct pci_dev *pdev, goto init_one_exit; } - netif_carrier_off(dev); - bp->common.name = board_info[ent->driver_data].name; printk(KERN_INFO "%s: %s (%c%d) PCI-E x%d %s found at mem %lx," " IRQ %d, ", dev->name, bp->common.name, -- cgit v1.2.2 From 7cde1c8b79f913a0158bae4f4c612de2cb98e7e4 Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 06:01:25 +0000 Subject: bnx2x: Calling napi_del rmmod might hang without this patch since the reference counter is not going down Signed-off-by: Yitchak Gertner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index fbd71659cca6..71fbf2dbda3b 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -6547,6 +6547,8 @@ load_error2: bnx2x_free_irq(bp); load_error1: bnx2x_napi_disable(bp); + for_each_queue(bp, i) + netif_napi_del(&bnx2x_fp(bp, i, napi)); bnx2x_free_mem(bp); /* TBD we really need to reset the chip @@ -6855,6 +6857,8 @@ unload_error: bnx2x_free_skbs(bp); for_each_queue(bp, i) bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); + for_each_queue(bp, i) + netif_napi_del(&bnx2x_fp(bp, i, napi)); bnx2x_free_mem(bp); bp->state = BNX2X_STATE_CLOSED; @@ -10481,6 +10485,8 @@ static int bnx2x_eeh_nic_unload(struct bnx2x *bp) bnx2x_free_skbs(bp); for_each_queue(bp, i) bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); + for_each_queue(bp, i) + netif_napi_del(&bnx2x_fp(bp, i, napi)); bnx2x_free_mem(bp); bp->state = BNX2X_STATE_CLOSED; -- cgit v1.2.2 From 5650d9d4cbf3898d3f9725ccad5dfca6bc086324 Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 06:01:29 +0000 Subject: bnx2x: Missing rmb when waiting for FW response Waiting for the FW to response requires a memory barrier Signed-off-by: Michal Kalderon Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 71fbf2dbda3b..f71b8a5872b3 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -6622,6 +6622,7 @@ static int bnx2x_stop_leading(struct bnx2x *bp) } cnt--; msleep(1); + rmb(); /* Refresh the dsb_sp_prod */ } bp->state = BNX2X_STATE_CLOSING_WAIT4_UNLOAD; bp->fp[0].state = BNX2X_FP_STATE_CLOSED; -- cgit v1.2.2 From 3910c8ae44c59cebed721e33aa496f0a385b4e03 Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 06:01:32 +0000 Subject: bnx2x: loopback test failure A link change interrupt might be queued and activated after the loopback was set and it will cause the loopback to fail. The PHY lock should be kept until the loopback test is over. That implies that the bnx2x_test_link should used within the loopback function and not bnx2x_wait_for_link since that function also takes the PHY link Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index f71b8a5872b3..d95714f780f3 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -8750,18 +8750,17 @@ static int bnx2x_run_loopback(struct bnx2x *bp, int loopback_mode, u8 link_up) if (loopback_mode == BNX2X_MAC_LOOPBACK) { bp->link_params.loopback_mode = LOOPBACK_BMAC; - bnx2x_acquire_phy_lock(bp); bnx2x_phy_init(&bp->link_params, &bp->link_vars); - bnx2x_release_phy_lock(bp); } else if (loopback_mode == BNX2X_PHY_LOOPBACK) { + u16 cnt = 1000; bp->link_params.loopback_mode = LOOPBACK_XGXS_10; - bnx2x_acquire_phy_lock(bp); bnx2x_phy_init(&bp->link_params, &bp->link_vars); - bnx2x_release_phy_lock(bp); /* wait until link state is restored */ - bnx2x_wait_for_link(bp, link_up); - + if (link_up) + while (cnt-- && bnx2x_test_link(&bp->link_params, + &bp->link_vars)) + msleep(10); } else return -EINVAL; @@ -8867,6 +8866,7 @@ static int bnx2x_test_loopback(struct bnx2x *bp, u8 link_up) return BNX2X_LOOPBACK_FAILED; bnx2x_netif_stop(bp, 1); + bnx2x_acquire_phy_lock(bp); if (bnx2x_run_loopback(bp, BNX2X_MAC_LOOPBACK, link_up)) { DP(NETIF_MSG_PROBE, "MAC loopback failed\n"); @@ -8878,6 +8878,7 @@ static int bnx2x_test_loopback(struct bnx2x *bp, u8 link_up) rc |= BNX2X_PHY_LOOPBACK_FAILED; } + bnx2x_release_phy_lock(bp); bnx2x_netif_start(bp); return rc; -- cgit v1.2.2 From 5422a2257350d984094e655b2361abed51a9ddc1 Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Thu, 22 Jan 2009 06:01:37 +0000 Subject: bnx2x: Version Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index d95714f780f3..4b84f6ce5ed2 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -57,8 +57,8 @@ #include "bnx2x.h" #include "bnx2x_init.h" -#define DRV_MODULE_VERSION "1.45.24" -#define DRV_MODULE_RELDATE "2009/01/14" +#define DRV_MODULE_VERSION "1.45.25" +#define DRV_MODULE_RELDATE "2009/01/22" #define BNX2X_BC_VER 0x040200 /* Time in jiffies before concluding the transmitter is hung */ -- cgit v1.2.2 From e8b5fc514d1c7637cb4b8f77e7d8ac33ef66130c Mon Sep 17 00:00:00 2001 From: Vladislav Zolotarov Date: Mon, 26 Jan 2009 12:36:42 -0800 Subject: bnx2x: tx_has_work should not wait for FW The current tx_has_work waited until all packets sent by the driver are marked as completed by the FW. This is too greedy and it causes the bnx2x_poll to spin in vain. The driver should only check that all packets FW already completed are freed - only in unload flow the driver should make sure that transmit queue is empty Signed-off-by: Vladislav Zolotarov Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'drivers/net/bnx2x_main.c') diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 4b84f6ce5ed2..d3e7775a9ccf 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -57,8 +57,8 @@ #include "bnx2x.h" #include "bnx2x_init.h" -#define DRV_MODULE_VERSION "1.45.25" -#define DRV_MODULE_RELDATE "2009/01/22" +#define DRV_MODULE_VERSION "1.45.26" +#define DRV_MODULE_RELDATE "2009/01/26" #define BNX2X_BC_VER 0x040200 /* Time in jiffies before concluding the transmitter is hung */ @@ -740,8 +740,15 @@ static inline int bnx2x_has_tx_work(struct bnx2x_fastpath *fp) /* Tell compiler that status block fields can change */ barrier(); tx_cons_sb = le16_to_cpu(*fp->tx_cons_sb); - return ((fp->tx_pkt_prod != tx_cons_sb) || - (fp->tx_pkt_prod != fp->tx_pkt_cons)); + return (fp->tx_pkt_cons != tx_cons_sb); +} + +static inline int bnx2x_has_tx_work_unload(struct bnx2x_fastpath *fp) +{ + /* Tell compiler that consumer and producer can change */ + barrier(); + return (fp->tx_pkt_prod != fp->tx_pkt_cons); + } /* free skb in the packet ring at pos idx @@ -6729,7 +6736,7 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode) cnt = 1000; smp_rmb(); - while (bnx2x_has_tx_work(fp)) { + while (bnx2x_has_tx_work_unload(fp)) { bnx2x_tx_int(fp, 1000); if (!cnt) { -- cgit v1.2.2