On 10/19/2011 04:55 PM, Nico Schottelius wrote:
> Hey Arend,
>
>
> Arend van Spriel [Wed, Oct 19, 2011 at 04:43:27PM +0200]:
>> I actually don't see the rtnl_lock or mutex_lock that was listed in your
>> original dmesg. There are a lot of warning traces from mac80211.c.
The warnings are probably a diversion. This is the warning in
ieee80211_rx():
if (WARN_ON(status->rate_idx < 0 ||
status->rate_idx >= sband->n_bitrates))
goto drop;
rate = &sband->bitrates[status->rate_idx];
This means that the driver (brcmsmac) provides a data packet with an
out-of-range rate index. This reminded me of a fix I made about a month
ago. Could you apply the attached patch file. It is based on:
commit bee709ab1d390afe69e4407bc86bb706c6fb2965
Merge: ad1c761 1f2c7e9
Author: Nico Schottelius <nico@xxxxxxxxxx>
Date: Tue Oct 18 00:04:05 2011 +0200
Merge branch 'fix-edp-vdd-power' of ../keithp/linux
As it drops receive packets it may be your problem. Is your AP on 5GHz?
Gr. AvS
From 7d14bd6cbfbf26369c5958e56a468fd8429841d7 Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend@xxxxxxxxxxxx>
Date: Wed, 19 Oct 2011 18:42:45 +0200
Subject: [PATCH] staging: brcm80211: fix for rate index in receive status
Made a patch for Nico to try whether this resolves his issue.
Signed-off-by: Arend van Spriel <arend@xxxxxxxxxxxx>
---
drivers/staging/brcm80211/brcmsmac/main.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/brcm80211/brcmsmac/main.c b/drivers/staging/brcm80211/brcmsmac/main.c
index 1763c45..49c8eb9 100644
--- a/drivers/staging/brcm80211/brcmsmac/main.c
+++ b/drivers/staging/brcm80211/brcmsmac/main.c
@@ -4608,6 +4608,10 @@ prep_mac80211_status(struct brcms_c_info *wlc, struct d11rxhdr *rxh,
wiphy_err(wlc->wiphy, "%s: Unknown rate\n", __func__);
}
+ /* DEBUG: fix rate index in receive status */
+ if (rx_status->band == IEEE80211_BAND_5GHZ)
+ rx_status->rate_idx -= 4;
+
/* Determine short preamble and rate_idx */
preamble = 0;
if (IS_CCK(rspec)) {
--
1.7.4.1
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