From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794060927; b=P7XptXenoLmBlSwPW6XzHEFhigoH3hfYF/jzL00SeaiMIkV/2j56emUfyJH64ahdZ3rg 9zeoMj3YAXfnC5627+ZWqd5PW3xQJUm+wc4ynKMlJ9uvssP8TRJ+Xkgp4/8eAElScNSlS TfMImkFRQKMr3jOGlp8Uyu7IvG/Z0MAAmZuBq9szcd+D9sm6qQiSOIDPFLOBtn6RuIq4s Sws13I7/zMkxdbtJdItgChPMZe5FdfmoIghh8PH8QfSuOEHhudy4pYw8XSrjf8RdvD0V+ i778ieBSJEjeRx1esbMFGpTTXv1ZjAXVhabuIjWzGNAuCX/gtZVCRoAmaFLmAMuvEAw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794060927; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=jtMWRufNN4POcWD3hPSOaU0WUoG8WQkSgvvZhMzXMnY=; b=UNZa1TrWdVIztJr+ar215Cx4C+HPq1t/GQVhC7ytuNQiqe/5+QKuMYHNXoSWgs91IdBM WwH04AGEnmQ/64DCDD+9C7fjci50tz0kSIje6E+7lUAaZOUbIaqbtNOgD3b5s3SLYSZe2 N7pkDtsvEetj08Lgee7JQoqTFNSfC10bOcNM2sykPvVNWOsZwBVKO8TdM3n3OpffoWxvg Vd4VCc7GxPwRfhif7/KPv5eykxhDKW1N19smK62edXY4+UKoxHmOqHouYA4ulgdk6bh7R aAB28jTCbAdxDZAkoa3+dj1pn/yw2VHD0/MIW01s1JO9zAY+cRTx7xPBZBlAdhPBwVg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=adqJPQ38; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 47858606A33A; Sat, 7 Nov 2026 14:15:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=adqJPQ38 Received: by smtp.kernel.org (Postfix) with ESMTPSA id C675C1F0089F; Sat, 7 Nov 2026 14:15:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794060927; bh=jtMWRufNN4POcWD3hPSOaU0WUoG8WQkSgvvZhMzXMnY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=adqJPQ38LycvIf4ExjlPjVj2q7+GqCI60N7Al2RtTVfZaxzJUiYQtCnupsaP6lLs8 jXu9iSUh7uyOkzB0o6WVMajEkB9RM8hp6dbY91Ot/a8yLl338KSV0ZBUygzp5EcJ9X NU72/I2F8lsWTZ0jf0Ah5nIfwLpPHwEcF1fsSQSM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Can Peng , Arend van Spriel , Johannes Berg , Sasha Levin Subject: [PATCH 6.12 0255/1536] wifi: brcmfmac: Set DMA direction for msgbuf packet IDs Date: Sat, 7 Nov 2026 08:37:51 -0500 Message-ID: <20261107135004.847530659@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Can Peng [ Upstream commit f0ba5fd51ff23077ce66cb9be79d41a4b7c19c5e ] brcmf_msgbuf_init_pktids() takes the DMA direction from its callers, but never stores it in the packet ID state. Since the state is zeroed, pktids->direction remains DMA_BIDIRECTIONAL for both the TX and RX packet ID pools. All msgbuf packet ID map and unmap paths use pktids->direction. As a result, TX buffers requested with DMA_TO_DEVICE and RX buffers requested with DMA_FROM_DEVICE are mapped and unmapped as DMA_BIDIRECTIONAL instead. Store the caller-provided direction when initializing the packet ID state. Signed-off-by: Can Peng Acked-by: Arend van Spriel Link: https://patch.msgid.link/20260724092530.674624-1-pengcan@kylinos.cn Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c index 45fbcbdc7d9e4..de47d6b7e02b2 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c @@ -310,6 +310,7 @@ brcmf_msgbuf_init_pktids(u32 nr_array_entries, } pktids->array = array; pktids->array_size = nr_array_entries; + pktids->direction = direction; return pktids; } -- 2.53.0