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>
diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index de10773..2547ee2 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -1019,3 +1019,24 @@
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;
+}