diff options
| author | Dengke Qiu <dqiu@qca.qualcomm.com> | 2012-08-28 11:33:42 +0400 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-10-24 12:49:48 +0400 |
| commit | 83685091acb878980711c3b28fe42e8959583e84 (patch) | |
| tree | 65eb1b374eaaeac66d46608f501d06b769e3553f /drivers/net/wireless/ath/ath6kl/wmi.c | |
| parent | 3814264481fecba02ba60f2e6c6baea2d43b757b (diff) | |
| download | linux-83685091acb878980711c3b28fe42e8959583e84.tar.xz | |
ath6kl: fix link speed when using sgi
The MSB of rate index from FW is used for sgi. But the ath6kl_wmi_get_rate
doesn't handle it. The access to wmi_rate_tbl array may be out of range
if sgi is 1. This may cause the return value of ath6kl_wmi_get_rate()
function is incorrect link rate. We add sgi adjustment to avoid such case.
kvalo: change patch title
Signed-off-by: Dengke Qiu <dqiu@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/wmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/wmi.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c index e95b035168ad..cd2db42c0989 100644 --- a/drivers/net/wireless/ath/ath6kl/wmi.c +++ b/drivers/net/wireless/ath/ath6kl/wmi.c @@ -3263,10 +3263,21 @@ int ath6kl_wmi_set_regdomain_cmd(struct wmi *wmi, const char *alpha2) s32 ath6kl_wmi_get_rate(s8 rate_index) { + u8 sgi = 0; + if (rate_index == RATE_AUTO) return 0; - return wmi_rate_tbl[(u32) rate_index][0]; + /* SGI is stored as the MSB of the rate_index */ + if (rate_index & RATE_INDEX_MSB) { + rate_index &= RATE_INDEX_WITHOUT_SGI_MASK; + sgi = 1; + } + + if (WARN_ON(rate_index > RATE_MCS_7_40)) + rate_index = RATE_MCS_7_40; + + return wmi_rate_tbl[(u32) rate_index][sgi]; } static int ath6kl_wmi_get_pmkid_list_event_rx(struct wmi *wmi, u8 *datap, |