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Subject: mac80211: clean up ieee80211_hw_config errors
Warn when ieee80211_hw_config returns an error, it shouldn't
happen; remove a number of printks that would happen in such
a case and one printk that is user-triggerable.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
---
net/mac80211/cfg.c | 3 +--
net/mac80211/main.c | 8 +++++++-
net/mac80211/scan.c | 16 +++-------------
net/mac80211/util.c | 5 +----
net/mac80211/wext.c | 6 +-----
5 files changed, 13 insertions(+), 25 deletions(-)
--- everything.orig/net/mac80211/cfg.c 2008-10-07 20:06:42.000000000 +0200
+++ everything/net/mac80211/cfg.c 2008-10-07 20:06:43.000000000 +0200
@@ -396,8 +396,7 @@ static int ieee80211_config_beacon(struc
*/
if (params->interval) {
sdata->local->hw.conf.beacon_int = params->interval;
- if (ieee80211_hw_config(sdata->local))
- return -EINVAL;
+ ieee80211_hw_config(sdata->local);
/*
* We updated some parameter so if below bails out
* it's not an error.
--- everything.orig/net/mac80211/main.c 2008-10-07 20:06:41.000000000 +0200
+++ everything/net/mac80211/main.c 2008-10-07 20:06:43.000000000 +0200
@@ -222,8 +222,14 @@ int ieee80211_hw_config(struct ieee80211
wiphy_name(local->hw.wiphy), chan->center_freq);
#endif
- if (local->open_count)
+ if (local->open_count) {
ret = local->ops->config(local_to_hw(local), &local->hw.conf);
+ /*
+ * HW reconfiguration should never fail, the driver has told
+ * us what it can support so it should live up to that promise.
+ */
+ WARN_ON(ret);
+ }
return ret;
}
--- everything.orig/net/mac80211/scan.c 2008-10-07 20:05:27.000000000 +0200
+++ everything/net/mac80211/scan.c 2008-10-07 20:06:43.000000000 +0200
@@ -447,18 +447,12 @@ void ieee80211_scan_completed(struct iee
if (local->hw_scanning) {
local->hw_scanning = false;
- if (ieee80211_hw_config(local))
- printk(KERN_DEBUG "%s: failed to restore operational "
- "channel after scan\n", wiphy_name(local->hw.wiphy));
-
+ ieee80211_hw_config(local);
goto done;
}
local->sw_scanning = false;
- if (ieee80211_hw_config(local))
- printk(KERN_DEBUG "%s: failed to restore operational "
- "channel after scan\n", wiphy_name(local->hw.wiphy));
-
+ ieee80211_hw_config(local);
netif_tx_lock_bh(local->mdev);
netif_addr_lock(local->mdev);
@@ -545,12 +539,8 @@ void ieee80211_scan_work(struct work_str
if (!skip) {
local->scan_channel = chan;
- if (ieee80211_hw_config(local)) {
- printk(KERN_DEBUG "%s: failed to set freq to "
- "%d MHz for scan\n", wiphy_name(local->hw.wiphy),
- chan->center_freq);
+ if (ieee80211_hw_config(local))
skip = 1;
- }
}
/* advance state machine to next channel/band */
--- everything.orig/net/mac80211/util.c 2008-10-07 20:05:27.000000000 +0200
+++ everything/net/mac80211/util.c 2008-10-07 20:06:43.000000000 +0200
@@ -638,11 +638,8 @@ int ieee80211_set_freq(struct ieee80211_
if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
- chan->flags & IEEE80211_CHAN_NO_IBSS) {
- printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
- "%d MHz\n", sdata->dev->name, chan->center_freq);
+ chan->flags & IEEE80211_CHAN_NO_IBSS)
return ret;
- }
local->oper_channel = chan;
if (local->sw_scanning || local->hw_scanning)
--- everything.orig/net/mac80211/wext.c 2008-10-07 20:05:27.000000000 +0200
+++ everything/net/mac80211/wext.c 2008-10-07 20:06:43.000000000 +0200
@@ -689,12 +689,8 @@ static int ieee80211_ioctl_siwtxpower(st
ieee80211_led_radio(local, local->hw.conf.radio_enabled);
}
- if (need_reconfig) {
+ if (need_reconfig)
ieee80211_hw_config(local);
- /* The return value of hw_config is not of big interest here,
- * as it doesn't say that it failed because of _this_ config
- * change or something else. Ignore it. */
- }
return 0;
}
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