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be2net: Patch to perform function reset at initialization 

This patch is a bug fix to avoid system going into a bad state when
driver is loaded in context of kdump kernel. The patch fixes the issue
by performing a soft reset of pci function at probe time.

Signed-off-by: sarveshwarb <sarveshwarb@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
sarveshwarb 2009-08-05 13:05:24 -07:00 committed by David S. Miller
parent 0d6038ee76
commit 14074eab8d
3 changed files with 27 additions and 0 deletions
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21
drivers/net/benet/be_cmds.c
View File

@ -1019,3 +1019,24 @@ int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num)
spin_unlock(&adapter->mbox_lock);
return status;
}
int be_cmd_reset_function(struct be_adapter *adapter)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&adapter->mbox_mem);
struct be_cmd_req_hdr *req = embedded_payload(wrb);
int status;
spin_lock(&adapter->mbox_lock);
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(req, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_FUNCTION_RESET, sizeof(*req));
status = be_mbox_notify(adapter);
spin_unlock(&adapter->mbox_lock);
return status;
}

2
drivers/net/benet/be_cmds.h
View File

@ -135,6 +135,7 @@ struct be_mcc_mailbox {
#define OPCODE_COMMON_QUERY_FIRMWARE_CONFIG 58
#define OPCODE_COMMON_NTWK_PMAC_ADD 59
#define OPCODE_COMMON_NTWK_PMAC_DEL 60
#define OPCODE_COMMON_FUNCTION_RESET 61
#define OPCODE_ETH_ACPI_CONFIG 2
#define OPCODE_ETH_PROMISCUOUS 3
@ -744,4 +745,5 @@ extern int be_cmd_set_flow_control(struct be_adapter *adapter,
extern int be_cmd_get_flow_control(struct be_adapter *adapter,
u32 *tx_fc, u32 *rx_fc);
extern int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num);
extern int be_cmd_reset_function(struct be_adapter *adapter);
extern void be_process_mcc(struct be_adapter *adapter);

4
drivers/net/benet/be_main.c
View File

@ -1873,6 +1873,10 @@ static int __devinit be_probe(struct pci_dev *pdev,
if (status)
goto free_netdev;
status = be_cmd_reset_function(adapter);
if (status)
goto ctrl_clean;
status = be_stats_init(adapter);
if (status)
goto ctrl_clean;