* [PATCH] ath10k: fix dma_mapping_error() handling
@ 2015-08-19 11:10 ` Michal Kazior
0 siblings, 0 replies; 4+ messages in thread
From: Michal Kazior @ 2015-08-19 11:10 UTC (permalink / raw)
To: ath10k; +Cc: linux-wireless, Michal Kazior
The function returns 1 when DMA mapping fails. The
driver would return bogus values and could
possibly confuse itself if DMA failed.
Fixes: 767d34fc67af ("ath10k: remove DMA mapping wrappers")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
---
drivers/net/wireless/ath/ath10k/htc.c | 4 +++-
drivers/net/wireless/ath/ath10k/htt_tx.c | 8 ++++++--
drivers/net/wireless/ath/ath10k/pci.c | 8 ++++++--
drivers/net/wireless/ath/ath10k/wmi.c | 1 +
4 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 85bfa2acb801..32d9ff1b19dc 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -145,8 +145,10 @@ int ath10k_htc_send(struct ath10k_htc *htc,
skb_cb->eid = eid;
skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
ret = dma_mapping_error(dev, skb_cb->paddr);
- if (ret)
+ if (ret) {
+ ret = -EIO;
goto err_credits;
+ }
sg_item.transfer_id = ep->eid;
sg_item.transfer_context = skb;
diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index 704bb5e07193..43aa5e2d1b87 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -442,8 +442,10 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
DMA_TO_DEVICE);
res = dma_mapping_error(dev, skb_cb->paddr);
- if (res)
+ if (res) {
+ res = -EIO;
goto err_free_txdesc;
+ }
skb_put(txdesc, len);
cmd = (struct htt_cmd *)txdesc->data;
@@ -533,8 +535,10 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
DMA_TO_DEVICE);
res = dma_mapping_error(dev, skb_cb->paddr);
- if (res)
+ if (res) {
+ res = -EIO;
goto err_free_txbuf;
+ }
switch (skb_cb->txmode) {
case ATH10K_HW_TXRX_RAW:
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index f00b251ec9ce..826220f795c7 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -1667,8 +1667,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
ret = dma_mapping_error(ar->dev, req_paddr);
- if (ret)
+ if (ret) {
+ ret = -EIO;
goto err_dma;
+ }
if (resp && resp_len) {
tresp = kzalloc(*resp_len, GFP_KERNEL);
@@ -1680,8 +1682,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
DMA_FROM_DEVICE);
ret = dma_mapping_error(ar->dev, resp_paddr);
- if (ret)
+ if (ret) {
+ ret = EIO;
goto err_req;
+ }
xfer.wait_for_resp = true;
xfer.resp_len = 0;
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 42c0aba04fb2..6ac016dc28f8 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -3238,6 +3238,7 @@ void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
ath10k_warn(ar, "failed to map beacon: %d\n",
ret);
dev_kfree_skb_any(bcn);
+ ret = -EIO;
goto skip;
}
--
2.1.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] ath10k: fix dma_mapping_error() handling
@ 2015-08-19 11:10 ` Michal Kazior
0 siblings, 0 replies; 4+ messages in thread
From: Michal Kazior @ 2015-08-19 11:10 UTC (permalink / raw)
To: ath10k; +Cc: linux-wireless, Michal Kazior
The function returns 1 when DMA mapping fails. The
driver would return bogus values and could
possibly confuse itself if DMA failed.
Fixes: 767d34fc67af ("ath10k: remove DMA mapping wrappers")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
---
drivers/net/wireless/ath/ath10k/htc.c | 4 +++-
drivers/net/wireless/ath/ath10k/htt_tx.c | 8 ++++++--
drivers/net/wireless/ath/ath10k/pci.c | 8 ++++++--
drivers/net/wireless/ath/ath10k/wmi.c | 1 +
4 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 85bfa2acb801..32d9ff1b19dc 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -145,8 +145,10 @@ int ath10k_htc_send(struct ath10k_htc *htc,
skb_cb->eid = eid;
skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
ret = dma_mapping_error(dev, skb_cb->paddr);
- if (ret)
+ if (ret) {
+ ret = -EIO;
goto err_credits;
+ }
sg_item.transfer_id = ep->eid;
sg_item.transfer_context = skb;
diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index 704bb5e07193..43aa5e2d1b87 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -442,8 +442,10 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
DMA_TO_DEVICE);
res = dma_mapping_error(dev, skb_cb->paddr);
- if (res)
+ if (res) {
+ res = -EIO;
goto err_free_txdesc;
+ }
skb_put(txdesc, len);
cmd = (struct htt_cmd *)txdesc->data;
@@ -533,8 +535,10 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
DMA_TO_DEVICE);
res = dma_mapping_error(dev, skb_cb->paddr);
- if (res)
+ if (res) {
+ res = -EIO;
goto err_free_txbuf;
+ }
switch (skb_cb->txmode) {
case ATH10K_HW_TXRX_RAW:
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index f00b251ec9ce..826220f795c7 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -1667,8 +1667,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
ret = dma_mapping_error(ar->dev, req_paddr);
- if (ret)
+ if (ret) {
+ ret = -EIO;
goto err_dma;
+ }
if (resp && resp_len) {
tresp = kzalloc(*resp_len, GFP_KERNEL);
@@ -1680,8 +1682,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
DMA_FROM_DEVICE);
ret = dma_mapping_error(ar->dev, resp_paddr);
- if (ret)
+ if (ret) {
+ ret = EIO;
goto err_req;
+ }
xfer.wait_for_resp = true;
xfer.resp_len = 0;
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 42c0aba04fb2..6ac016dc28f8 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -3238,6 +3238,7 @@ void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
ath10k_warn(ar, "failed to map beacon: %d\n",
ret);
dev_kfree_skb_any(bcn);
+ ret = -EIO;
goto skip;
}
--
2.1.4
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] ath10k: fix dma_mapping_error() handling
2015-08-19 11:10 ` Michal Kazior
@ 2015-08-26 8:08 ` Kalle Valo
-1 siblings, 0 replies; 4+ messages in thread
From: Kalle Valo @ 2015-08-26 8:08 UTC (permalink / raw)
To: Michal Kazior; +Cc: ath10k, linux-wireless
Michal Kazior <michal.kazior@tieto.com> writes:
> The function returns 1 when DMA mapping fails. The
> driver would return bogus values and could
> possibly confuse itself if DMA failed.
>
> Fixes: 767d34fc67af ("ath10k: remove DMA mapping wrappers")
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Thanks, applied.
--
Kalle Valo
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ath10k: fix dma_mapping_error() handling
@ 2015-08-26 8:08 ` Kalle Valo
0 siblings, 0 replies; 4+ messages in thread
From: Kalle Valo @ 2015-08-26 8:08 UTC (permalink / raw)
To: Michal Kazior; +Cc: linux-wireless, ath10k
Michal Kazior <michal.kazior@tieto.com> writes:
> The function returns 1 when DMA mapping fails. The
> driver would return bogus values and could
> possibly confuse itself if DMA failed.
>
> Fixes: 767d34fc67af ("ath10k: remove DMA mapping wrappers")
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Thanks, applied.
--
Kalle Valo
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-08-26 8:08 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2015-08-19 11:10 [PATCH] ath10k: fix dma_mapping_error() handling Michal Kazior
2015-08-19 11:10 ` Michal Kazior
2015-08-26 8:08 ` Kalle Valo
2015-08-26 8:08 ` Kalle Valo
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