| From | Pali Rohár <> | Subject | [PATCH v2 09/16] wl1251: fix channel switching in monitor mode | Date | Sun, 8 Dec 2013 10:25:07 +0100 |
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From: David Gnedt <david.gnedt@davizone.at>
Use the ENABLE_RX command for channel switching when no interface is present (monitor mode only). The advantage of ENABLE_RX is that it leaves the tx data path disabled in firmware, whereas the usual JOIN command seems to transmit some frames at firmware level.
Signed-off-by: David Gnedt <david.gnedt@davizone.at> Signed-off-by: Pali Rohár <pali.rohar@gmail.com> --- drivers/net/wireless/ti/wl1251/main.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c index 1223bc6..b6f11b8 100644 --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@ -616,8 +616,19 @@ static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) if (channel != wl->channel) { wl->channel = channel; - ret = wl1251_join(wl, wl->bss_type, wl->channel, - wl->beacon_int, wl->dtim_period); + /* + * Use ENABLE_RX command for channel switching when no + * interface is present (monitor mode only). + * This leaves the tx path disabled in firmware, whereas + * the usual JOIN command seems to transmit some frames + * at firmware level. + */ + if (wl->vif == NULL) { + ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); + } else { + ret = wl1251_join(wl, wl->bss_type, wl->channel, + wl->beacon_int, wl->dtim_period); + } if (ret < 0) goto out_sleep; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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