Commit 14074eab authored by sarveshwarb's avatar sarveshwarb Committed by David S. Miller
Browse files

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: default avatarsarveshwarb <sarveshwarb@serverengines.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0d6038ee

drivers/net/benet/be_cmds.c

+21 −0
Original line number Diff line number Diff line
@@ -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;

}

drivers/net/benet/be_cmds.h

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/benet/be_main.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

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