From 62bc060b8ed5fcdafd87da5ab17bdd59a39ebcc9 Mon Sep 17 00:00:00 2001
From: Mattias Nissler <mattias.nissler@gmx.de>
Date: Mon, 12 Nov 2007 15:03:12 +0100
Subject: [PATCH] rt2x00: Allow rt61 to catch up after a missing tx report
Sometimes it happens in the tx path that an entry given to the hardware isn't
reported in the txdone handler. This ultimately led to the dreaded "non-free
entry in the non-full queue" message and the stopping of the tx queue. Work
around this issue by allowing the driver to also clear out previos entries in
the txdone handler.
Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/rt2x00/rt61pci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 01dbef19d651..ecae968ce091 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1738,6 +1738,7 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
{
struct data_ring *ring;
struct data_entry *entry;
+ struct data_entry *entry_done;
struct data_desc *txd;
u32 word;
u32 reg;
@@ -1791,6 +1792,17 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
!rt2x00_get_field32(word, TXD_W0_VALID))
return;
+ entry_done = rt2x00_get_data_entry_done(ring);
+ while (entry != entry_done) {
+ /* Catch up. Just report any entries we missed as
+ * failed. */
+ WARNING(rt2x00dev,
+ "TX status report missed for entry %p\n",
+ entry_done);
+ rt2x00lib_txdone(entry_done, TX_FAIL_OTHER, 0);
+ entry_done = rt2x00_get_data_entry_done(ring);
+ }
+
/*
* Obtain the status about this packet.
*/
--
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