From f8c0305383121817c77d400c788d82ca1a74582c Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Thu, 12 Jul 2012 12:13:12 +0300 Subject: ath6kl: fix incorrect use of IEEE80211_NUM_BANDS ath6kl was incorrectly assuming that IEEE80211_NUM_BANDS will always be 2 and used that also in the firmware WMI interface definitions. But after the support for 60 GHz was added to cfg80211 IEEE80211_NUM_BANDS changed to 3 and this can cause all sort of problems, possibly even memory corruption. I only found this during code review and didn't notice any bugs, but I'm sure there are a few lurking somewhere. To fix this rename unused A_NUM_BANDS to ATH6KL_NUM_BANDS, which is always defined to be 2, and use that in WMI. Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath6kl/wmi.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/ath/ath6kl/wmi.c') diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c index cf91348fdbdb..d485a7c3428d 100644 --- a/drivers/net/wireless/ath/ath6kl/wmi.c +++ b/drivers/net/wireless/ath/ath6kl/wmi.c @@ -2695,11 +2695,13 @@ static int ath6kl_set_bitrate_mask64(struct wmi *wmi, u8 if_idx, { struct sk_buff *skb; int ret, mode, band; - u64 mcsrate, ratemask[IEEE80211_NUM_BANDS]; + u64 mcsrate, ratemask[ATH6KL_NUM_BANDS]; struct wmi_set_tx_select_rates64_cmd *cmd; memset(&ratemask, 0, sizeof(ratemask)); - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + + /* only check 2.4 and 5 GHz bands, skip the rest */ + for (band = 0; band <= IEEE80211_BAND_5GHZ; band++) { /* copy legacy rate mask */ ratemask[band] = mask->control[band].legacy; if (band == IEEE80211_BAND_5GHZ) @@ -2745,11 +2747,13 @@ static int ath6kl_set_bitrate_mask32(struct wmi *wmi, u8 if_idx, { struct sk_buff *skb; int ret, mode, band; - u32 mcsrate, ratemask[IEEE80211_NUM_BANDS]; + u32 mcsrate, ratemask[ATH6KL_NUM_BANDS]; struct wmi_set_tx_select_rates32_cmd *cmd; memset(&ratemask, 0, sizeof(ratemask)); - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + + /* only check 2.4 and 5 GHz bands, skip the rest */ + for (band = 0; band <= IEEE80211_BAND_5GHZ; band++) { /* copy legacy rate mask */ ratemask[band] = mask->control[band].legacy; if (band == IEEE80211_BAND_5GHZ) -- cgit v1.2.3