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| author | Jon Mason <jon.mason@exar.com> | 2010-12-10 15:02:59 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-11 01:08:23 +0100 |
| commit | 2e41f6449c561e6e3f572e11d0f2240bd51104db (patch) | |
| tree | ef85460cfe71e67cd76cc764c7f48ee88a8005ab /drivers/net/vxge/vxge-main.c | |
| parent | vxge: use pci_request_region() (diff) | |
| download | linux-2e41f6449c561e6e3f572e11d0f2240bd51104db.tar.xz linux-2e41f6449c561e6e3f572e11d0f2240bd51104db.zip | |
vxge: transmit timeout deadlock
Use a workqueue to handle the device reset during a transmit timeout, as
there can be a deadlock during bringup. Also, set the netif carrier off
before the watchdog reset is started to prevent the timeout from
reoccurring while still processing the first.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxge/vxge-main.c')
| -rw-r--r-- | drivers/net/vxge/vxge-main.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c index faebffb02d12..3ec80684cd5f 100644 --- a/drivers/net/vxge/vxge-main.c +++ b/drivers/net/vxge/vxge-main.c @@ -1606,12 +1606,16 @@ static int do_vxge_reset(struct vxgedev *vdev, int event) } if (event == VXGE_LL_FULL_RESET) { + netif_carrier_off(vdev->ndev); + /* wait for all the vpath reset to complete */ for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { while (test_bit(vp_id, &vdev->vp_reset)) msleep(50); } + netif_carrier_on(vdev->ndev); + /* if execution mode is set to debug, don't reset the adapter */ if (unlikely(vdev->exec_mode)) { vxge_debug_init(VXGE_ERR, @@ -1765,9 +1769,14 @@ out: * * driver may reset the chip on events of serr, eccerr, etc */ -static int vxge_reset(struct vxgedev *vdev) +static void vxge_reset(struct work_struct *work) { - return do_vxge_reset(vdev, VXGE_LL_FULL_RESET); + struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task); + + if (!netif_running(vdev->ndev)) + return; + + do_vxge_reset(vdev, VXGE_LL_FULL_RESET); } /** @@ -3111,8 +3120,7 @@ static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) * This function is triggered if the Tx Queue is stopped * for a pre-defined amount of time when the Interface is still up. */ -static void -vxge_tx_watchdog(struct net_device *dev) +static void vxge_tx_watchdog(struct net_device *dev) { struct vxgedev *vdev; @@ -3122,7 +3130,7 @@ vxge_tx_watchdog(struct net_device *dev) vdev->cric_err_event = VXGE_HW_EVENT_RESET_START; - vxge_reset(vdev); + schedule_work(&vdev->reset_task); vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__); } @@ -3324,6 +3332,7 @@ static int __devinit vxge_device_register(struct __vxge_hw_device *hldev, ndev->netdev_ops = &vxge_netdev_ops; ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT; + INIT_WORK(&vdev->reset_task, vxge_reset); vxge_initialize_ethtool_ops(ndev); |