From patchwork Wed Feb 17 16:26:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffrey Hugo X-Patchwork-Id: 12091879 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65717C433E6 for ; Wed, 17 Feb 2021 16:28:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1557E64D7F for ; Wed, 17 Feb 2021 16:28:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234199AbhBQQ2Q (ORCPT ); Wed, 17 Feb 2021 11:28:16 -0500 Received: from z11.mailgun.us ([104.130.96.11]:12042 "EHLO z11.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234195AbhBQQ2E (ORCPT ); Wed, 17 Feb 2021 11:28:04 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1613579259; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=FfWam90evYrs9oiuuAG/yGw15utShTokfK2D2y7pmZE=; b=HeyuVJvlk/8CSTVtYN3foMsDRlTS/ZJTu8iQHViQdsMMKg3HZZ/sU5oDAnESD8jdhA6LXy1v s+D9C6Rg4ITQv1XnIF2CVdKSXFsXW4pByRTJpmzen5uaSgxbHbIHtFmxs85S25EBgKhp5jJG xxrSJ8s9DCF3NKdMe3cmGCdYBdI= X-Mailgun-Sending-Ip: 104.130.96.11 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-east-1.postgun.com with SMTP id 602d43d966a058a0ecaa5fa8 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 17 Feb 2021 16:27:05 GMT Sender: jhugo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id CC3ADC433ED; Wed, 17 Feb 2021 16:27:04 +0000 (UTC) Received: from jhugo-lnx.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jhugo) by smtp.codeaurora.org (Postfix) with ESMTPSA id D334CC433C6; Wed, 17 Feb 2021 16:27:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D334CC433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=jhugo@codeaurora.org From: Jeffrey Hugo To: manivannan.sadhasivam@linaro.org, hemantk@codeaurora.org Cc: bbhatt@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Fan Wu , Jeffrey Hugo Subject: [PATCH v3] bus: mhi: core: Return EAGAIN if MHI ring is full Date: Wed, 17 Feb 2021 09:26:49 -0700 Message-Id: <1613579209-3675-1-git-send-email-jhugo@codeaurora.org> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Fan Wu Currently ENOMEM is returned when MHI ring is full. This error code is very misleading. Change to EAGAIN instead. Signed-off-by: Fan Wu Signed-off-by: Jeffrey Hugo Reviewed-by: Hemant Kumar Reviewed-by: Manivannan Sadhasivam --- v3: Fix subject v2: Change from EBUSY to EAGAIN drivers/bus/mhi/core/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c index b63f9e6..1eb2fd3 100644 --- a/drivers/bus/mhi/core/main.c +++ b/drivers/bus/mhi/core/main.c @@ -1054,7 +1054,7 @@ static int mhi_queue(struct mhi_device *mhi_dev, struct mhi_buf_info *buf_info, ret = mhi_is_ring_full(mhi_cntrl, tre_ring); if (unlikely(ret)) { - ret = -ENOMEM; + ret = -EAGAIN; goto exit_unlock; }