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ath10k: fix debugfs_create_dir() checking

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The function may return an -ENODEV if debugfs is
disabled in kernel. This should originally be
guarded by ath10k's Kconfig but it still makes
sense to check for the non-NULL errno return
value.

Reported-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2014-09-04 12:36:45 +02:00 committed by Kalle Valo
parent d5aebc77b4
commit adb43b24ec
1 changed files with 6 additions and 2 deletions
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8
drivers/net/wireless/ath/ath10k/debug.c
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@ -1176,8 +1176,12 @@ int ath10k_debug_register(struct ath10k *ar)
{
ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
ar->hw->wiphy->debugfsdir);
if (!ar->debug.debugfs_phy)
return -ENOMEM;
if (IS_ERR_OR_NULL(ar->debug.debugfs_phy)) {
if (IS_ERR(ar->debug.debugfs_phy))
return PTR_ERR(ar->debug.debugfs_phy);
else
return -ENOMEM;
}
INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
ath10k_debug_htt_stats_dwork);