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| author | Roman Peshkichev <roman.peshkichev@gmail.com> | 2025-11-25 21:09:37 +0300 |
|---|---|---|
| committer | Ping-Ke Shih <pkshih@realtek.com> | 2025-12-23 06:26:07 +0300 |
| commit | 9f68fdcdc9dbf21be2a48feced90ff7f77d07443 (patch) | |
| tree | 94817af6a82790b9e50321d463e179ad036a9555 /include/linux | |
| parent | 8f7aa3d3c7323f4ca2768a9e74ebbe359c4f8f88 (diff) | |
| download | linux-9f68fdcdc9dbf21be2a48feced90ff7f77d07443.tar.xz | |
wifi: rtw88: fix DTIM period handling when conf->dtim_period is zero
The function rtw_set_dtim_period() accepted an 'int' dtim_period parameter,
while mac80211 provides dtim_period as 'u8' in struct ieee80211_bss_conf.
In IBSS (ad-hoc) mode mac80211 may set dtim_period to 0.
The driver unconditionally wrote (dtim_period - 1) to
REG_DTIM_COUNTER_ROOT, which resulted in 0xFF when dtim_period was 0. This
caused delays in broadcast/multicast traffic processing and issues with
ad-hoc operation.
Convert the function parameter to u8 to match ieee80211_bss_conf and avoid
the underflow by writing 0 when dtim_period is 0.
Link: https://github.com/lwfinger/rtw88/issues/406
Signed-off-by: Roman Peshkichev <roman.peshkichev@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251125180937.22977-1-roman.peshkichev@gmail.com
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions