diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/debug.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/debug.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index 881ca6cb47db..daa316bf47b3 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -289,6 +289,7 @@ static ssize_t write_file_bt_ant_diversity(struct file *file, { struct ath_softc *sc = file->private_data; struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath9k_hw_capabilities *pCap = &sc->sc_ah->caps; unsigned long bt_ant_diversity; char buf[32]; ssize_t len; @@ -297,6 +298,9 @@ static ssize_t write_file_bt_ant_diversity(struct file *file, if (copy_from_user(buf, user_buf, len)) return -EFAULT; + if (!(pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV)) + goto exit; + buf[len] = '\0'; if (kstrtoul(buf, 0, &bt_ant_diversity)) return -EINVAL; @@ -307,7 +311,7 @@ static ssize_t write_file_bt_ant_diversity(struct file *file, ath_dbg(common, CONFIG, "Enable WLAN/BT RX Antenna diversity: %d\n", common->bt_ant_diversity); ath9k_ps_restore(sc); - +exit: return count; } |
