From e68e6133e2daef6fc40e91621a1e26938e428e9e Mon Sep 17 00:00:00 2001 From: Casey Leedom Date: Thu, 11 Nov 2010 09:06:53 +0000 Subject: cxgb4vf: add call to Firmware to reset VF State. Add call to Firmware to reset its VF State when we first attach to the VF. Signed-off-by: Casey Leedom Signed-off-by: David S. Miller --- drivers/net/cxgb4vf/cxgb4vf_main.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers/net/cxgb4vf/cxgb4vf_main.c') diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c index 8da3bda13f3..c3449bbc585 100644 --- a/drivers/net/cxgb4vf/cxgb4vf_main.c +++ b/drivers/net/cxgb4vf/cxgb4vf_main.c @@ -2064,6 +2064,22 @@ static int adap_init0(struct adapter *adapter) return err; } + /* + * Some environments do not properly handle PCIE FLRs -- e.g. in Linux + * 2.6.31 and later we can't call pci_reset_function() in order to + * issue an FLR because of a self- deadlock on the device semaphore. + * Meanwhile, the OS infrastructure doesn't issue FLRs in all the + * cases where they're needed -- for instance, some versions of KVM + * fail to reset "Assigned Devices" when the VM reboots. Therefore we + * use the firmware based reset in order to reset any per function + * state. + */ + err = t4vf_fw_reset(adapter); + if (err < 0) { + dev_err(adapter->pdev_dev, "FW reset failed: err=%d\n", err); + return err; + } + /* * Grab basic operational parameters. These will predominantly have * been set up by the Physical Function Driver or will be hard coded -- cgit v1.2.3-18-g5258