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[23.128.96.18]) by mx.google.com with ESMTP id v12si10501661eja.379.2020.07.20.09.22.39; Mon, 20 Jul 2020 09:22:40 -0700 (PDT) Received-SPF: pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=r3dpSNIv; spf=pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732804AbgGTQGZ (ORCPT + 15 others); Mon, 20 Jul 2020 12:06:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:42704 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732620AbgGTQGZ (ORCPT ); Mon, 20 Jul 2020 12:06:25 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EC86F2064B; Mon, 20 Jul 2020 16:06:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595261184; bh=UrBuyJDEcb2P1q4yldNPXBc8+4qK4/umagj9wFiJm7c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r3dpSNIvA5gPYxrbdO9F+SB4JwTy8wS/yQmpswKdSAl/GnXIrCCjx4w9v7fPr41bn 8uusf3O2EjG03O56nCm9rue6EMtLrn1TV5uXG7BOPGbbKsPLJxS4GCei2MU8QcrfCb omqQM2tlXLbocucZA/DMu0/jSX8O5D2BZFS0JS5g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alex Elder , "David S. Miller" Subject: [PATCH 5.7 024/244] net: ipa: introduce ipa_cmd_tag_process() Date: Mon, 20 Jul 2020 17:34:55 +0200 Message-Id: <20200720152827.008366062@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200720152825.863040590@linuxfoundation.org> References: <20200720152825.863040590@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alex Elder [ Upstream commit 6cb63ea6a39eac9640d109f274a237b34350c183 ] Create a new function ipa_cmd_tag_process() that simply allocates a transaction, adds a tag process command to it to clear the hardware pipeline, and commits the transaction. Call it in from ipa_endpoint_suspend(), after suspending the modem endpoints but before suspending the AP command TX and AP LAN RX endpoints (which are used by the tag sequence). Signed-off-by: Alex Elder Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ipa/ipa_cmd.c | 15 +++++++++++++++ drivers/net/ipa/ipa_cmd.h | 8 ++++++++ drivers/net/ipa/ipa_endpoint.c | 2 ++ 3 files changed, 25 insertions(+) --- a/drivers/net/ipa/ipa_cmd.c +++ b/drivers/net/ipa/ipa_cmd.c @@ -645,6 +645,21 @@ u32 ipa_cmd_tag_process_count(void) return 4; } +void ipa_cmd_tag_process(struct ipa *ipa) +{ + u32 count = ipa_cmd_tag_process_count(); + struct gsi_trans *trans; + + trans = ipa_cmd_trans_alloc(ipa, count); + if (trans) { + ipa_cmd_tag_process_add(trans); + gsi_trans_commit_wait(trans); + } else { + dev_err(&ipa->pdev->dev, + "error allocating %u entry tag transaction\n", count); + } +} + static struct ipa_cmd_info * ipa_cmd_info_alloc(struct ipa_endpoint *endpoint, u32 tre_count) { --- a/drivers/net/ipa/ipa_cmd.h +++ b/drivers/net/ipa/ipa_cmd.h @@ -183,6 +183,14 @@ void ipa_cmd_tag_process_add(struct gsi_ u32 ipa_cmd_tag_process_count(void); /** + * ipa_cmd_tag_process() - Perform a tag process + * + * @Return: The number of elements to allocate in a transaction + * to hold tag process commands + */ +void ipa_cmd_tag_process(struct ipa *ipa); + +/** * ipa_cmd_trans_alloc() - Allocate a transaction for the command TX endpoint * @ipa: IPA pointer * @tre_count: Number of elements in the transaction --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1485,6 +1485,8 @@ void ipa_endpoint_suspend(struct ipa *ip if (ipa->modem_netdev) ipa_modem_suspend(ipa->modem_netdev); + ipa_cmd_tag_process(ipa); + ipa_endpoint_suspend_one(ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]); ipa_endpoint_suspend_one(ipa->name_map[IPA_ENDPOINT_AP_COMMAND_TX]); }