Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-26 21:02:19 +00:00
Code Issues Packages Projects Releases Wiki Activity

ath10k: fix invalid NSS for 4x4 devices

Browse Source 
The number of spatial streams that are derived from chain mask
for 4x4 devices is using wrong bitmask and conditional check.
This is affecting downlink throughput for QCA99x0 devices. Earlier
cfg_tx_chainmask is not filled by default until user configured it
and so get_nss_from_chainmask never be called. This issue is exposed
by recent commit 166de3f189 ("ath10k: remove supported chain mask").
By default maximum supported chain mask is filled in cfg_tx_chainmask.

Cc: stable@vger.kernel.org
Fixes: 5572a95b4b ("ath10k: apply chainmask settings to vdev on creation")
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Rajkumar Manoharan 2015-11-03 11:51:33 +05:30 committed by Kalle Valo
parent 761d4be5cf
commit f680f70adb
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ath/ath10k/mac.c
View File

@ -4225,7 +4225,7 @@ static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
static u32 get_nss_from_chainmask(u16 chain_mask)
{
if ((chain_mask & 0x15) == 0x15)
if ((chain_mask & 0xf) == 0xf)
return 4;
else if ((chain_mask & 0x7) == 0x7)
return 3;