From mboxrd@z Thu Jan 1 00:00:00 1970 From: Abhishek Sahu Subject: [PATCH 05/12] i2c: qup: fix the transfer length for BAM rx EOT FLUSH tags Date: Sat, 3 Feb 2018 13:28:10 +0530 Message-ID: <1517644697-30806-6-git-send-email-absahu@codeaurora.org> References: <1517644697-30806-1-git-send-email-absahu@codeaurora.org> Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]:35538 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751912AbeBCH6q (ORCPT ); Sat, 3 Feb 2018 02:58:46 -0500 In-Reply-To: <1517644697-30806-1-git-send-email-absahu@codeaurora.org> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Andy Gross , Wolfram Sang Cc: David Brown , Sricharan R , linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, Abhishek Sahu In case of FLUSH operation, BAM copies INPUT EOT FLUSH (0x94) instead of normal EOT (0x93) tag in input data stream when an input EOT tag is received during flush operation. So only one tag will be written instead of 2 separate tags. Signed-off-by: Abhishek Sahu --- drivers/i2c/busses/i2c-qup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c index 6357aff..094be6a 100644 --- a/drivers/i2c/busses/i2c-qup.c +++ b/drivers/i2c/busses/i2c-qup.c @@ -768,10 +768,10 @@ static int qup_i2c_bam_do_xfer(struct qup_i2c_dev *qup, struct i2c_msg *msg, qup->btx.tag.start[0] = QUP_BAM_INPUT_EOT; len++; - /* scratch buf to read the BAM EOT and FLUSH tags */ + /* scratch buf to read the BAM EOT FLUSH tags */ ret = qup_sg_set_buf(&qup->brx.sg[rx_buf++], &qup->brx.tag.start[0], - 2, qup, DMA_FROM_DEVICE); + 1, qup, DMA_FROM_DEVICE); if (ret) return ret; } -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation