Beginning with kernel 3.8, the DMA mapping systems begins issuing a WARNING for
the first call that maps DMA and fails to call dma_mapping_error() to check
the result. This set of patches adds the appropriate checks to the rtlwifi
family of drivers.
V2 fixes a copy-and-paste error in patch 4/5. All others are unchanged.
Signed-off-by: Larry Finger <[email protected]>
Larry Finger (5):
rtlwifi: Fix warning for unchecked pci_map_single() call
rtlwifi: rtl8192ce: Fix warning for unchecked pci_map_single() call
rtlwifi: rtl8192de: Fix warning for unchecked pci_map_single() call
rtlwifi: rtl8192se: Fix warning for unchecked pci_map_single() call
rtlwifi: rtl8723ae: Fix warning for unchecked pci_map_single() call
drivers/net/wireless/rtlwifi/pci.c | 6 ++++++
drivers/net/wireless/rtlwifi/rtl8192ce/trx.c | 11 +++++++++++
drivers/net/wireless/rtlwifi/rtl8192de/trx.c | 10 ++++++++++
drivers/net/wireless/rtlwifi/rtl8192se/trx.c | 13 ++++++++++++-
drivers/net/wireless/rtlwifi/rtl8723ae/trx.c | 12 ++++++++++++
5 files changed, 51 insertions(+), 1 deletion(-)
--
1.7.10.4
Kernel 3.8 implements checking of all DMA mapping calls and issues
a WARNING for the first it finds that is not checked.
Signed-off-by: Larry Finger <[email protected]>
---
drivers/net/wireless/rtlwifi/rtl8192ce/trx.c | 11 +++++++++++
1 file changed, 11 insertions(+)
No change for V2.
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
index 1734247..c31795e 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
@@ -611,8 +611,14 @@ void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
dma_addr_t mapping = pci_map_single(rtlpci->pdev,
skb->data, skb->len,
PCI_DMA_TODEVICE);
+
u8 bw_40 = 0;
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
rcu_read_lock();
sta = get_sta(hw, mac->vif, mac->bssid);
if (mac->opmode == NL80211_IFTYPE_STATION) {
@@ -774,6 +780,11 @@ void rtl92ce_tx_fill_cmddesc(struct ieee80211_hw *hw,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
__le16 fc = hdr->frame_control;
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE);
if (firstseg)
--
1.7.10.4
Kernel 3.8 implements checking of all DMA mapping calls and issues
a WARNING for the first it finds that is not checked.
Signed-off-by: Larry Finger <[email protected]>
---
drivers/net/wireless/rtlwifi/rtl8192de/trx.c | 10 ++++++++++
1 file changed, 10 insertions(+)
No change for V2.
diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
index f9f3861..a0fbf28 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
@@ -587,6 +587,11 @@ void rtl92de_tx_fill_desc(struct ieee80211_hw *hw,
buf_len = skb->len;
mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
CLEAR_PCI_TX_DESC_CONTENT(pdesc, sizeof(struct tx_desc_92d));
if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
firstseg = true;
@@ -740,6 +745,11 @@ void rtl92de_tx_fill_cmddesc(struct ieee80211_hw *hw,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
__le16 fc = hdr->frame_control;
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE);
if (firstseg)
SET_TX_DESC_OFFSET(pdesc, USB_HWDESC_HEADER_LEN);
--
1.7.10.4
Kernel 3.8 implements checking of all DMA mapping calls and issues
a WARNING for the first it finds that is not checked.
Signed-off-by: Larry Finger <[email protected]>
---
drivers/net/wireless/rtlwifi/rtl8723ae/trx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
No change in V2
diff --git a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
index 87331d8..7ddd517 100644
--- a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
@@ -387,6 +387,11 @@ void rtl8723ae_tx_fill_desc(struct ieee80211_hw *hw,
PCI_DMA_TODEVICE);
u8 bw_40 = 0;
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
if (mac->opmode == NL80211_IFTYPE_STATION) {
bw_40 = mac->bw_40;
} else if (mac->opmode == NL80211_IFTYPE_AP ||
@@ -542,6 +548,11 @@ void rtl8723ae_tx_fill_cmddesc(struct ieee80211_hw *hw,
PCI_DMA_TODEVICE);
__le16 fc = hdr->frame_control;
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE);
if (firstseg)
--
1.7.10.4
Kernel 3.8 implements checking of all DMA mapping calls and issues
a WARNING for the first it finds that is not checked.
Signed-off-by: Larry Finger <[email protected]>
---
drivers/net/wireless/rtlwifi/rtl8192se/trx.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
v2 - Copy-and-paste error fixed.
diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
index 0e9f6eb..206561d 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
@@ -611,6 +611,11 @@ void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
PCI_DMA_TODEVICE);
u8 bw_40 = 0;
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
if (mac->opmode == NL80211_IFTYPE_STATION) {
bw_40 = mac->bw_40;
} else if (mac->opmode == NL80211_IFTYPE_AP ||
@@ -763,6 +768,7 @@ void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc,
bool firstseg, bool lastseg, struct sk_buff *skb)
{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_tcb_desc *tcb_desc = (struct rtl_tcb_desc *)(skb->cb);
@@ -770,7 +776,12 @@ void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc,
dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
PCI_DMA_TODEVICE);
- /* Clear all status */
+ if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+ "DMA mapping error");
+ return;
+ }
+ /* Clear all status */
CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_CMDDESC_SIZE_RTL8192S);
/* This bit indicate this packet is used for FW download. */
--
1.7.10.4
Kernel 3.8 implements checking of all DMA mapping calls and issues
a WARNING for the first it finds that is not checked.
Signed-off-by: Larry Finger <[email protected]>
---
drivers/net/wireless/rtlwifi/pci.c | 6 ++++++
1 file changed, 6 insertions(+)
No change for V2.
diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 3deacaf..4261e8e 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -743,6 +743,8 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
done:
bufferaddress = (*((dma_addr_t *)skb->cb));
+ if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress))
+ return;
tmp_one = 1;
rtlpriv->cfg->ops->set_desc((u8 *) pdesc, false,
HW_DESC_RXBUFF_ADDR,
@@ -1115,6 +1117,10 @@ static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw)
PCI_DMA_FROMDEVICE);
bufferaddress = (*((dma_addr_t *)skb->cb));
+ if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress)) {
+ dev_kfree_skb_any(skb);
+ return 1;
+ }
rtlpriv->cfg->ops->set_desc((u8 *)entry, false,
HW_DESC_RXBUFF_ADDR,
(u8 *)&bufferaddress);
--
1.7.10.4