diff options
| author |   Maya Erez <qca_merez@qca.qualcomm.com> | 2016-05-16 22:23:33 +0300 |
|---|---|---|
| committer |   Kalle Valo <kvalo@qca.qualcomm.com> | 2016-05-28 11:19:21 +0300 |
| commit | a1526f7eafa434f756579e2bc784b7605f96bf3e (patch) | |
| tree | 902116008c285286722d1db0fd0fb8a46ce07c3b /drivers/net/wireless/ath/wil6210/txrx.c | |
| parent | wil6210: protect wil_vring_fini_tx in parallel to tx completions (diff) | |
| download | linux-dev-a1526f7eafa434f756579e2bc784b7605f96bf3e.tar.xz linux-dev-a1526f7eafa434f756579e2bc784b7605f96bf3e.zip | |
wil6210: fix dma mapping error cleanup in __wil_tx_vring_tso
In case we fail to map one of the TSO SKB fragments, we need to
clear all the mapped descriptors, from swhead to swhead+descs_used-1.
Change the desc index calculation to
i = (swhead + descs_used - 1) % vring->size;
to prevent unmpping of (swhead + descs_used) descriptor that wasn't
mapped.
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/txrx.c')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/txrx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c index 483e0634041c..f2f6a404d3d1 100644 --- a/drivers/net/wireless/ath/wil6210/txrx.c +++ b/drivers/net/wireless/ath/wil6210/txrx.c @@ -1594,7 +1594,7 @@ mem_error: while (descs_used > 0) { struct wil_ctx *ctx; - i = (swhead + descs_used) % vring->size; + i = (swhead + descs_used - 1) % vring->size; d = (struct vring_tx_desc *)&vring->va[i].tx; _desc = &vring->va[i].tx; *d = *_desc; |