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| author | Josh Boyer <jwboyer@redhat.com> | 2012-07-04 11:30:05 -0400 |
|---|---|---|
| committer | Josh Boyer <jwboyer@redhat.com> | 2012-07-04 11:34:36 -0400 |
| commit | 83ef0f3582bd023d86bbfb401ebe61b55f6e4366 (patch) | |
| tree | 48cb109a1bd23f4783213da8f2e7bdf799fa6c5b /rt2x00usb-fix-indexes-ordering-on-RX-queue-kick.patch | |
| parent | f594e5be67180f7fb80a36b42affa1523b760bf0 (diff) | |
| download | kernel-83ef0f3582bd023d86bbfb401ebe61b55f6e4366.tar.gz kernel-83ef0f3582bd023d86bbfb401ebe61b55f6e4366.tar.xz kernel-83ef0f3582bd023d86bbfb401ebe61b55f6e4366.zip | |
Patch from Stanislaw Gruszka to fix rt2x00 USB access point (rhbz 828824)
Diffstat (limited to 'rt2x00usb-fix-indexes-ordering-on-RX-queue-kick.patch')
| -rw-r--r-- | rt2x00usb-fix-indexes-ordering-on-RX-queue-kick.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/rt2x00usb-fix-indexes-ordering-on-RX-queue-kick.patch b/rt2x00usb-fix-indexes-ordering-on-RX-queue-kick.patch new file mode 100644 index 00000000..76b83cca --- /dev/null +++ b/rt2x00usb-fix-indexes-ordering-on-RX-queue-kick.patch @@ -0,0 +1,43 @@ +From e899a84a6e9bec0ce653713a48ca121cd754430c Mon Sep 17 00:00:00 2001 +From: Stanislaw Gruszka <sgruszka@redhat.com> +Date: Mon, 2 Jul 2012 09:42:14 +0200 +Subject: [PATCH] rt2x00usb: fix indexes ordering on RX queue kick + +On rt2x00_dmastart() we increase index specified by Q_INDEX and on +rt2x00_dmadone() we increase index specified by Q_INDEX_DONE. So entries +between Q_INDEX_DONE and Q_INDEX are those we currently process in the +hardware. Entries between Q_INDEX and Q_INDEX_DONE are those we can +submit to the hardware. + +According to that fix rt2x00usb_kick_queue(), as we need to submit rx +entries that are not processed by the hardware. It worked before only +for empty queue, otherwise was broken. + +Note that for TX queues indexes ordering are ok. We need to kick entries +that have filled skb, but was not submitted to the hardware, i.e. +strted from Q_INDEX_DONE and have ENTRY_DATA_PENDING bit set. + +From practical standpoint this patch fixes AP mode connection hangs. + +Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> +--- + drivers/net/wireless/rt2x00/rt2x00usb.c | 2 +- + 1 files changed, 1 insertions(+), 1 deletions(-) + +diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c +index d357d1e..74ecc33 100644 +--- a/drivers/net/wireless/rt2x00/rt2x00usb.c ++++ b/drivers/net/wireless/rt2x00/rt2x00usb.c +@@ -436,8 +436,8 @@ void rt2x00usb_kick_queue(struct data_queue *queue) + case QID_RX: + if (!rt2x00queue_full(queue)) + rt2x00queue_for_each_entry(queue, +- Q_INDEX_DONE, + Q_INDEX, ++ Q_INDEX_DONE, + NULL, + rt2x00usb_kick_rx_entry); + break; +-- +1.7.1 + |