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libertas: submit RSSI command on tx timeout, to check whether module is dead

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We don't necessarily want to reset the device on a TX timeout. But more
often than not, the real cause is that the firmware has crapped itself,
not just that the network is busy. So submit any harmless command, and
if _that_ times out, then the error handling code will reset the module,
as appropriate.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
David Woodhouse 2007-12-17 19:22:40 -05:00 committed by David S. Miller
parent 18c52e7c3e
commit 354eca9820
1 changed files with 7 additions and 0 deletions
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7
drivers/net/wireless/libertas/main.c
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@ -476,6 +476,13 @@ static void lbs_tx_timeout(struct net_device *dev)
to kick it somehow? */
lbs_host_to_card_done(priv);
/* More often than not, this actually happens because the
firmware has crapped itself -- rather than just a very
busy medium. So send a harmless command, and if/when
_that_ times out, we'll kick it in the head. */
lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
0, 0, NULL);
lbs_deb_leave(LBS_DEB_TX);
}