From 7acc2087fa204461871eccfdc913eef15ffd5c8f Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 11 Feb 2011 13:38:17 +0000 Subject: [PATCH] be2net: gracefully handle situations when UE is detected Avoid accessing the hardware when UE is detected. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/benet/be_cmds.c | 15 +++++++++++++++ drivers/net/benet/be_main.c | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c index 8fa9a709d9f..619ebc24602 100644 --- a/drivers/net/benet/be_cmds.c +++ b/drivers/net/benet/be_cmds.c @@ -23,6 +23,12 @@ static void be_mcc_notify(struct be_adapter *adapter) struct be_queue_info *mccq = &adapter->mcc_obj.q; u32 val = 0; + if (adapter->eeh_err) { + dev_info(&adapter->pdev->dev, + "Error in Card Detected! Cannot issue commands\n"); + return; + } + val |= mccq->id & DB_MCCQ_RING_ID_MASK; val |= 1 << DB_MCCQ_NUM_POSTED_SHIFT; @@ -217,6 +223,9 @@ static int be_mcc_wait_compl(struct be_adapter *adapter) int i, num, status = 0; struct be_mcc_obj *mcc_obj = &adapter->mcc_obj; + if (adapter->eeh_err) + return -EIO; + for (i = 0; i < mcc_timeout; i++) { num = be_process_mcc(adapter, &status); if (num) @@ -246,6 +255,12 @@ static int be_mbox_db_ready_wait(struct be_adapter *adapter, void __iomem *db) int msecs = 0; u32 ready; + if (adapter->eeh_err) { + dev_err(&adapter->pdev->dev, + "Error detected in card.Cannot issue commands\n"); + return -EIO; + } + do { ready = ioread32(db); if (ready == 0xffffffff) { diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 7e83c06f913..1f5e342dd88 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -1827,6 +1827,7 @@ void be_detect_dump_ue(struct be_adapter *adapter) if (ue_status_lo || ue_status_hi) { adapter->ue_detected = true; + adapter->eeh_err = true; dev_err(&adapter->pdev->dev, "UE Detected!!\n"); } -- 2.39.5