From 62bc060b8ed5fcdafd87da5ab17bdd59a39ebcc9 Mon Sep 17 00:00:00 2001 From: Mattias Nissler 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 Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- 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 01dbef1..ecae968 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. */ -- 2.7.4