From: John Allen <jallen@linux.vnet.ibm.com>
To: netdev@vger.kernel.org
Cc: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>,
Nathan Fontenot <nfont@linux.vnet.ibm.com>
Subject: [PATCH net v2 3/3] ibmvnic: Allocate and request vpd in init_resources
Date: Thu, 18 Jan 2018 16:27:58 -0600 [thread overview]
Message-ID: <0a4000cd-dc0a-fe1c-0512-e0e74a9ef60b@linux.vnet.ibm.com> (raw)
In-Reply-To: <97de0d55-5b81-40f9-c3b8-0d28e4d80539@linux.vnet.ibm.com>
In reset events in which our memory allocations need to be reallocated,
VPD data is being freed, but never reallocated. This can cause issues if
we later attempt to access that memory or reset and attempt to free the
memory. This patch moves the allocation of the VPD data to init_resources
so that it will be symmetrically freed during release resources.
Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
---
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index bb56460..f0dbb76 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -867,7 +867,7 @@ static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter)
if (adapter->vpd->buff)
len = adapter->vpd->len;
- reinit_completion(&adapter->fw_done);
+ init_completion(&adapter->fw_done);
crq.get_vpd_size.first = IBMVNIC_CRQ_CMD;
crq.get_vpd_size.cmd = GET_VPD_SIZE;
ibmvnic_send_crq(adapter, &crq);
@@ -929,6 +929,13 @@ static int init_resources(struct ibmvnic_adapter *adapter)
if (!adapter->vpd)
return -ENOMEM;
+ /* Vital Product Data (VPD) */
+ rc = ibmvnic_get_vpd(adapter);
+ if (rc) {
+ netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
+ return rc;
+ }
+
adapter->map_id = 1;
adapter->napi = kcalloc(adapter->req_rx_queues,
sizeof(struct napi_struct), GFP_KERNEL);
@@ -1002,7 +1009,7 @@ static int __ibmvnic_open(struct net_device *netdev)
static int ibmvnic_open(struct net_device *netdev)
{
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
- int rc, vpd;
+ int rc;
mutex_lock(&adapter->reset_lock);
@@ -1030,11 +1037,6 @@ static int ibmvnic_open(struct net_device *netdev)
rc = __ibmvnic_open(netdev);
netif_carrier_on(netdev);
- /* Vital Product Data (VPD) */
- vpd = ibmvnic_get_vpd(adapter);
- if (vpd)
- netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
-
mutex_unlock(&adapter->reset_lock);
return rc;
next prev parent reply other threads:[~2018-01-18 22:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-18 22:25 [PATCH net v2 0/3] ibmvnic: Reset behavior fixes John Allen
2018-01-18 22:26 ` [PATCH net v2 1/3] ibmvnic: Modify buffer size and number of queues on failover John Allen
2018-01-19 19:22 ` Nathan Fontenot
2018-01-18 22:27 ` [PATCH net v2 2/3] ibmvnic: Revert to previous mtu when unsupported value requested John Allen
2018-01-19 19:23 ` Nathan Fontenot
2018-01-18 22:27 ` John Allen [this message]
2018-01-19 19:24 ` [PATCH net v2 3/3] ibmvnic: Allocate and request vpd in init_resources Nathan Fontenot
2018-01-22 20:47 ` [PATCH net v2 0/3] ibmvnic: Reset behavior fixes David Miller
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