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>
diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c
index 483e063..f2f6a40 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -1594,7 +1594,7 @@
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;