From 8f9b3f69944ab7eacb9273b4723087c42b5f4046 Mon Sep 17 00:00:00 2001 From: Amit Kumar Salecha Date: Wed, 2 Dec 2009 15:46:19 +0000 Subject: netxen: fix failure cases for fw hang recovery Handle few corner cases in firmware hang detection and recovery: o Don't mark device state as READY, till handshake with firmware is done. o During probe, if start_firmware fails, restore reference count. o Don't increment refernce count, if start_firmware fails during firmware reset. o Clear __NX_RESETTING bit, incase of fatal error or tempeature reaches critical limit so that pci remove() doesn't poll on this bit. Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/netxen/netxen_nic_main.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index 838420dbc63..e5d187fce51 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -819,7 +819,7 @@ netxen_start_firmware(struct netxen_adapter *adapter) if (err < 0) goto err_out; if (err == 0) - goto ready; + goto wait_init; if (first_boot != 0x55555555) { NXWR32(adapter, CRB_CMDPEG_STATE, 0); @@ -862,9 +862,6 @@ netxen_start_firmware(struct netxen_adapter *adapter) | (_NETXEN_NIC_LINUX_SUBVERSION); NXWR32(adapter, CRB_DRIVER_VERSION, val); -ready: - NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY); - wait_init: /* Handshake with the card before we register the devices. */ err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); @@ -873,6 +870,8 @@ wait_init: goto err_out; } + NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY); + nx_update_dma_mask(adapter); netxen_check_options(adapter); @@ -1282,7 +1281,7 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) err = netxen_start_firmware(adapter); if (err) - goto err_out_iounmap; + goto err_out_decr_ref; /* * See if the firmware gave us a virtual-physical port mapping. @@ -1326,6 +1325,7 @@ err_out_disable_msi: netxen_free_dummy_dma(adapter); +err_out_decr_ref: nx_decr_dev_ref_cnt(adapter); err_out_iounmap: @@ -2189,14 +2189,13 @@ netxen_fwinit_work(struct work_struct *work) netxen_fwinit_work, 2 * FW_POLL_DELAY); return; } - break; case NX_DEV_FAILED: default: + nx_incr_dev_ref_cnt(adapter); break; } - nx_incr_dev_ref_cnt(adapter); clear_bit(__NX_RESETTING, &adapter->state); } @@ -2218,18 +2217,23 @@ netxen_detach_work(struct work_struct *work) status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1); - ref_cnt = nx_decr_dev_ref_cnt(adapter); - if (status & NX_RCODE_FATAL_ERROR) - return; + goto err_ret; if (adapter->temp == NX_TEMP_PANIC) - return; + goto err_ret; + + ref_cnt = nx_decr_dev_ref_cnt(adapter); delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY); adapter->fw_wait_cnt = 0; netxen_schedule_work(adapter, netxen_fwinit_work, delay); + + return; + +err_ret: + clear_bit(__NX_RESETTING, &adapter->state); } static int -- cgit v1.2.3-70-g09d2