From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45BF423A4 for ; Mon, 8 May 2023 10:32:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D9F0C433EF; Mon, 8 May 2023 10:32:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683541977; bh=IYZmfJeCMlc1+aGeb8ZTQac3SndB7d8Aqed+x0PqdsM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zghd/H3yvXlxkTwP0gQkPgcbVAnQBEV1L96bp+Flox0Xi+3XkzyP3+zMyTskvy5S6 Gh8fJcAfPPj5NWD3GU0PPMjDSPSV4IT+yu0ILXlPzmR0q681ZboL8WlKqAtm3o0C+I puhMMQVdY/494qZpAPbeUa16+J/fiGLBELqJE7XA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, John Keeping , Kalle Valo , Sasha Levin Subject: [PATCH 6.2 287/663] wifi: brcmfmac: support CQM RSSI notification with older firmware Date: Mon, 8 May 2023 11:41:53 +0200 Message-Id: <20230508094437.527872534@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094428.384831245@linuxfoundation.org> References: <20230508094428.384831245@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: John Keeping [ 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 Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230124104248.2917465-1-john@metanate.com Signed-off-by: Sasha Levin --- .../broadcom/brcm80211/brcmfmac/cfg80211.c | 14 ++++++++------ 1 file 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 b8c99bfce963a..d17bb22422f48 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -6494,18 +6494,20 @@ 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; -- 2.39.2