This is a note to let you know that I've just added the patch titled
brcm80211: smac: resume transmit fifo upon receiving frames
to the 3.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
brcm80211-smac-resume-transmit-fifo-upon-receiving-frames.patch
and it can be found in the queue-3.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From badc4f07622f0f7093a201638f45e85765f1b5e4 Mon Sep 17 00:00:00 2001
From: Arend van Spriel <[email protected]>
Date: Wed, 11 Apr 2012 11:52:51 +0200
Subject: brcm80211: smac: resume transmit fifo upon receiving frames
From: Arend van Spriel <[email protected]>
commit badc4f07622f0f7093a201638f45e85765f1b5e4 upstream.
There have been reports about not being able to use access-points
on channel 12 and 13 or having connectivity issues when these channels
were part of the selected regulatory domain. Upon switching to these
channels the brcmsmac driver suspends the transmit dma fifos. This
patch resumes them upon handing over the first received beacon to
mac80211.
This patch is to be applied to the stable tree for kernel versions
3.2 and 3.3.
Tested-by: Francesco Saverio Schiavarelli <[email protected]>
Reviewed-by: Pieter-Paul Giesberts <[email protected]>
Reviewed-by: Brett Rudley <[email protected]>
Signed-off-by: Arend van Spriel <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/wireless/brcm80211/brcmsmac/main.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -7629,6 +7629,7 @@ brcms_c_recvctl(struct brcms_c_info *wlc
{
int len_mpdu;
struct ieee80211_rx_status rx_status;
+ struct ieee80211_hdr *hdr;
memset(&rx_status, 0, sizeof(rx_status));
prep_mac80211_status(wlc, rxh, p, &rx_status);
@@ -7638,6 +7639,13 @@ brcms_c_recvctl(struct brcms_c_info *wlc
skb_pull(p, D11_PHY_HDR_LEN);
__skb_trim(p, len_mpdu);
+ /* unmute transmit */
+ if (wlc->hw->suspended_fifos) {
+ hdr = (struct ieee80211_hdr *)p->data;
+ if (ieee80211_is_beacon(hdr->frame_control))
+ brcms_b_mute(wlc->hw, false);
+ }
+
memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status));
ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p);
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.3/brcm80211-smac-resume-transmit-fifo-upon-receiving-frames.patch
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