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Re: [PATCH] brcm80211: smac: set interface down on reset

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Hi Arend,

what do you think about the proposed change? For me the problem is
quite severe, for the last several months I had to patch the kernel
to have functional BCM43225 on my laptop, hopefully the fix should go to the
stable branches as well.

On 05.08.2012 00:29, Vladimir Zapolskiy wrote:
This change marks interface as down on reset, otherwise the driver can't
reinitialize itself properly.

Without the change a transient problem turns out to be critical and leads
to inavailability to reset the driver without brcmsmac module unload/load
cycle:

s/inavailability/unavailability/

     ieee80211 phy0: wl0: PSM microcode watchdog fired at 5993 (seconds). Resetting.
     brcms_c_dpc : PSM Watchdog, chipid 0xa8d9, chiprev 0x1
     ieee80211 phy0: wl0: fatal error, reinitializing
     ieee80211 phy0: Hardware restart was requested
     ieee80211 phy0: brcms_ops_start: brcms_up() returned -19

Signed-off-by: Vladimir Zapolskiy<vz@xxxxxxxxx>
Cc: Arend van Spriel<arend@xxxxxxxxxxxx>
---
  drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c |    3 +++
  1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 192ad5c..a5edebe 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -1233,6 +1233,9 @@ uint brcms_reset(struct brcms_info *wl)
  	/* dpc will not be rescheduled */
  	wl->resched = false;

+	/* inform publicly that interface is down */
+	wl->pub->up = false;
+
  	return 0;
  }


--
With best wishes,
Vladimir
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