From: Michael Chan Date: Fri, 2 Aug 2013 18:28:23 +0000 (-0700) Subject: cnic, bnx2i: Fix bug on some bnx2x devices that don't support iSCSI X-Git-Tag: v3.12-rc1~132^2~368 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9e9402eb450f1c921cc130765a4554a84821feab;p=profile%2Fivi%2Fkernel-x86-ivi.git cnic, bnx2i: Fix bug on some bnx2x devices that don't support iSCSI On some bnx2x devices, iSCSI is determined to be unsupported only after firmware is downloaded. We need to check max_iscsi_conn again after NETDEV_UP and block iSCSI init operations. Without this fix, iscsiadm can hang as the firmware will not respond to the iSCSI init message. Signed-off-by: Eddie Wai Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index 6bd6d14..4f8a535 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -5276,6 +5276,13 @@ static int cnic_register_netdev(struct cnic_dev *dev) if (err) netdev_err(dev->netdev, "register_cnic failed\n"); + /* Read iSCSI config again. On some bnx2x device, iSCSI config + * can change after firmware is downloaded. + */ + dev->max_iscsi_conn = ethdev->max_iscsi_conn; + if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI) + dev->max_iscsi_conn = 0; + return err; } diff --git a/drivers/scsi/bnx2i/bnx2i_init.c b/drivers/scsi/bnx2i/bnx2i_init.c index 50fef69..3104202 100644 --- a/drivers/scsi/bnx2i/bnx2i_init.c +++ b/drivers/scsi/bnx2i/bnx2i_init.c @@ -172,16 +172,14 @@ void bnx2i_start(void *handle) struct bnx2i_hba *hba = handle; int i = HZ; - /* - * We should never register devices that don't support iSCSI - * (see bnx2i_init_one), so something is wrong if we try to - * start a iSCSI adapter on hardware with 0 supported iSCSI - * connections + /* On some bnx2x devices, it is possible that iSCSI is no + * longer supported after firmware is downloaded. In that + * case, the iscsi_init_msg will return failure. */ - BUG_ON(!hba->cnic->max_iscsi_conn); bnx2i_send_fw_iscsi_init_msg(hba); - while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) + while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && + !test_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state) && i--) msleep(BNX2I_INIT_POLL_TIME); }