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mt76: dfs: run mt76x02_dfs_set_domain atomically 

Grab mt76_dev mutex in mt76x02_dfs_set_domain since it runs
concurrently with mt76x{0,2}_set_channel routines

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2018-12-12 22:51:53 +01:00 committed by Felix Fietkau
parent bf349ce16e
commit 35c572818c
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/mediatek/mt76/mt76x02_dfs.c
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@ -881,12 +881,14 @@ mt76x02_dfs_set_domain(struct mt76x02_dev *dev,
{ {
struct mt76x02_dfs_pattern_detector *dfs_pd = &dev->dfs_pd; struct mt76x02_dfs_pattern_detector *dfs_pd = &dev->dfs_pd;
mutex_lock(&dev->mt76.mutex);
if (dfs_pd->region != region) { if (dfs_pd->region != region) {
tasklet_disable(&dfs_pd->dfs_tasklet); tasklet_disable(&dfs_pd->dfs_tasklet);
dfs_pd->region = region; dfs_pd->region = region;
mt76x02_dfs_init_params(dev); mt76x02_dfs_init_params(dev);
tasklet_enable(&dfs_pd->dfs_tasklet); tasklet_enable(&dfs_pd->dfs_tasklet);
} }
mutex_unlock(&dev->mt76.mutex);
} }
void mt76x02_regd_notifier(struct wiphy *wiphy, void mt76x02_regd_notifier(struct wiphy *wiphy,