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ath11k: fix resource unavailability for htt stats after peer stats display

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htt stats are not working after htt peer stats display
and also after htt peer stats reset. Trying to dump htt
stats shows "Resource temporarily unavailable".
This is because of "ar->debug.htt_stats.stats_req" member is being
consecutively used for all htt stats without being reset
during the previous usage. Hence assigning NULL to this member
after freeing the allocated memory fixes the issue.

console logs below:
# echo 9 >/sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats_type
# cat /sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats_type
9
# cat /sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats
cat: can't open '/sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats'
: Resource temporarily unavailable

Signed-off-by: Sowmiya Sree Elavalagan <ssreeela@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1588592755-10427-1-git-send-email-ssreeela@codeaurora.org
This commit is contained in:
Sowmiya Sree Elavalagan
2020-05-04 17:15:55 +05:30
committed by Kalle Valo
parent b7b527b9c7
commit 52f274b519
1 changed files with 9 additions and 0 deletions
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9
drivers/net/wireless/ath/ath11k/debugfs_sta.c
View File

@@ -435,13 +435,22 @@ ath11k_dbg_sta_open_htt_peer_stats(struct inode *inode, struct file *file)
return 0;
out:
vfree(stats_req);
ar->debug.htt_stats.stats_req = NULL;
return ret;
}
static int
ath11k_dbg_sta_release_htt_peer_stats(struct inode *inode, struct file *file)
{
struct ieee80211_sta *sta = inode->i_private;
struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
struct ath11k *ar = arsta->arvif->ar;
mutex_lock(&ar->conf_mutex);
vfree(file->private_data);
ar->debug.htt_stats.stats_req = NULL;
mutex_unlock(&ar->conf_mutex);
return 0;
}