From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752047AbdHCNVR (ORCPT ); Thu, 3 Aug 2017 09:21:17 -0400 Received: from mga05.intel.com ([192.55.52.43]:26879 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751134AbdHCNVD (ORCPT ); Thu, 3 Aug 2017 09:21:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,316,1498546800"; d="scan'208";a="119188373" Subject: Re: [PATCH v3 2/2] mmc: sdhci-msm: set sdma_boundary to zero To: srinivas.kandagatla@linaro.org, ulf.hansson@linaro.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20170803124614.21788-1-srinivas.kandagatla@linaro.org> <20170803124614.21788-3-srinivas.kandagatla@linaro.org> From: Adrian Hunter Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Message-ID: <8520c8ea-48d5-92bc-5f15-a4f61e663376@intel.com> Date: Thu, 3 Aug 2017 16:14:41 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <20170803124614.21788-3-srinivas.kandagatla@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/08/17 15:46, srinivas.kandagatla@linaro.org wrote: > From: Srinivas Kandagatla > > Programming legacy HOST SDMA Buffer Boundary bits in Block Size Register > (0x04) is not supported in Qualcomm sdhci controllers. Writing to this > would cause the controller not to transfer last block in case block size > is 4 bytes or less. > > This issue was noticed while testing sdio wlan card on Qcom DB410c board. > > Signed-off-by: Srinivas Kandagatla Acked-by: Adrian Hunter > --- > drivers/mmc/host/sdhci-msm.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c > index 9d601dc..adfe5bd 100644 > --- a/drivers/mmc/host/sdhci-msm.c > +++ b/drivers/mmc/host/sdhci-msm.c > @@ -1133,6 +1133,7 @@ static int sdhci_msm_probe(struct platform_device *pdev) > if (IS_ERR(host)) > return PTR_ERR(host); > > + host->sdma_boundary = 0; > pltfm_host = sdhci_priv(host); > msm_host = sdhci_pltfm_priv(pltfm_host); > msm_host->mmc = host->mmc; >