diff options
| author | John Keeping <john@metanate.com> | 2023-01-24 10:42:48 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-11 23:03:17 +0900 |
| commit | 0022a3936e4ddd41a732341c887ff1c297bf7be9 (patch) | |
| tree | 9a6e4cbb38ce4f4b7b145cb85bcb6079b66e2a65 | |
| parent | 9354826c02e04e2ae4cdc4cb567baa67a9c2e11d (diff) | |
| download | linux-0022a3936e4ddd41a732341c887ff1c297bf7be9.tar.gz | |
wifi: brcmfmac: support CQM RSSI notification with older firmware
[ Upstream commit ec52d77d077529f198fd874c550a26b9cc86a331 ]
Using the BCM4339 firmware from linux-firmware (version "BCM4339/2 wl0:
Sep 5 2019 11:05:52 version 6.37.39.113 (r722271 CY)" from
cypress/cyfmac4339-sdio.bin) the RSSI respose is only 4 bytes, which
results in an error being logged.
It seems that older devices send only the RSSI field and neither SNR nor
noise is included. Handle this by accepting a 4 byte message and
reading only the RSSI from it.
Fixes: 7dd56ea45a66 ("brcmfmac: add support for CQM RSSI notifications")
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230124104248.2917465-1-john@metanate.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 12c4408bbc3b..2cc913acfc2d 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -6210,18 +6210,20 @@ static s32 brcmf_notify_rssi(struct brcmf_if *ifp, { struct brcmf_cfg80211_vif *vif = ifp->vif; struct brcmf_rssi_be *info = data; - s32 rssi, snr, noise; + s32 rssi, snr = 0, noise = 0; s32 low, high, last; - if (e->datalen < sizeof(*info)) { + if (e->datalen >= sizeof(*info)) { + rssi = be32_to_cpu(info->rssi); + snr = be32_to_cpu(info->snr); + noise = be32_to_cpu(info->noise); + } else if (e->datalen >= sizeof(rssi)) { + rssi = be32_to_cpu(*(__be32 *)data); + } else { brcmf_err("insufficient RSSI event data\n"); return 0; } - rssi = be32_to_cpu(info->rssi); - snr = be32_to_cpu(info->snr); - noise = be32_to_cpu(info->noise); - low = vif->cqm_rssi_low; high = vif->cqm_rssi_high; last = vif->cqm_rssi_last; |