lkml.org 
[lkml]   [2009]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 18/45] ath9k: fix dma mapping leak of rx buffer upon rmmod
-stable review patch.  If anyone has any objections, please let us know.
---------------------
From: Luis R. Rodriguez <lrodriguez@atheros.com>

upstream commit: 051b919188650fe4c93ca8701183ae88439388f6

We were claiming DMA buffers on the RX tasklet but never
upon a simple module removal.

Cc: stable@kernel.org
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
[chrisw: backport to 2.6.29]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
drivers/net/wireless/ath9k/recv.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -322,8 +322,13 @@ void ath_rx_cleanup(struct ath_softc *sc

list_for_each_entry(bf, &sc->rx.rxbuf, list) {
skb = bf->bf_mpdu;
- if (skb)
+ if (skb) {
+ pci_unmap_single(sc->pdev,
+ bf->bf_buf_addr,
+ sc->rx.bufsize,
+ DMA_FROM_DEVICE);
dev_kfree_skb(skb);
+ }
}

if (sc->rx.rxdma.dd_desc_len != 0)


\
 
 \ /
  Last update: 2009-04-01 01:31    [from the cache]
©2003-2011 Jasper Spaans