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author | adrian <adrian@FreeBSD.org> | 2013-04-20 22:46:31 +0000 |
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committer | adrian <adrian@FreeBSD.org> | 2013-04-20 22:46:31 +0000 |
commit | d11d65f4421ca56b682787708e5db158916410d0 (patch) | |
tree | 973999253adcd8a917dbe822697d3a7184067549 | |
parent | 68ade6e8fa7ad5b9b7d7f5c64d8db2d9bdfe89e6 (diff) | |
download | FreeBSD-src-d11d65f4421ca56b682787708e5db158916410d0.zip FreeBSD-src-d11d65f4421ca56b682787708e5db158916410d0.tar.gz |
There's some races (likely in the BAR handling, sigh) which is causing
the pause/resume code to not be called completely symmetrically.
I'll chase down the root cause of that soon; this at least works around
the bug and tells me when it happens.
-rw-r--r-- | sys/dev/ath/if_ath_tx.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/dev/ath/if_ath_tx.c b/sys/dev/ath/if_ath_tx.c index 5e7f13e..a651c86 100644 --- a/sys/dev/ath/if_ath_tx.c +++ b/sys/dev/ath/if_ath_tx.c @@ -2976,7 +2976,19 @@ ath_tx_tid_resume(struct ath_softc *sc, struct ath_tid *tid) { ATH_TX_LOCK_ASSERT(sc); - tid->paused--; + /* + * There's some odd places where ath_tx_tid_resume() is called + * when it shouldn't be; this works around that particular issue + * until it's actually resolved. + */ + if (tid->paused == 0) { + device_printf(sc->sc_dev, "%s: %6D: paused=0?\n", + __func__, + tid->an->an_node.ni_macaddr, + ":"); + } else { + tid->paused--; + } DPRINTF(sc, ATH_DEBUG_SW_TX_CTRL, "%s: unpaused = %d\n", __func__, tid->paused); |