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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>
This commit is contained in:
Mattias Nissler 2007-11-12 15:03:12 +01:00 committed by John W. Linville
parent 3ce5445046
commit 62bc060b8e
1 changed files with 12 additions and 0 deletions
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12
drivers/net/wireless/rt2x00/rt61pci.c
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@ -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.
*/