Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751546AbdHXHWS (ORCPT ); Thu, 24 Aug 2017 03:22:18 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:60642 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751401AbdHXHWP (ORCPT ); Thu, 24 Aug 2017 03:22:15 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3312660717 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=sricharan@codeaurora.org From: Sricharan R To: ohad@wizery.com, bjorn.andersson@linaro.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sricharan@codeaurora.org Subject: [PATCH v2 06/20] rpmsg: glink: Return -EAGAIN when there is no FIFO space Date: Thu, 24 Aug 2017 12:51:28 +0530 Message-Id: <1503559302-3744-7-git-send-email-sricharan@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1503559302-3744-1-git-send-email-sricharan@codeaurora.org> References: <1503559302-3744-1-git-send-email-sricharan@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 834 Lines: 25 The TX FIFO can be full, if the remote client has not read enough data (or) reading it slowly. So its nessecary to return -EAGAIN to the local client to enable retry. Signed-off-by: Sricharan R --- drivers/rpmsg/qcom_glink_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index a6394cd..94b79e8 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -233,7 +233,7 @@ static int qcom_glink_tx(struct qcom_glink *glink, while (qcom_glink_tx_avail(glink) < tlen) { if (!wait) { - ret = -ENOMEM; + ret = -EAGAIN; goto out; } -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation