From: Adrian Hunter <adrian.hunter@intel.com>
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
Subject: Re: [PATCH v3 2/2] mmc: sdhci-msm: set sdma_boundary to zero
Date: Thu, 3 Aug 2017 16:14:41 +0300 [thread overview]
Message-ID: <8520c8ea-48d5-92bc-5f15-a4f61e663376@intel.com> (raw)
In-Reply-To: <20170803124614.21788-3-srinivas.kandagatla@linaro.org>
On 03/08/17 15:46, srinivas.kandagatla@linaro.org wrote:
> From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
>
> 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 <srinivas.kandagatla@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
> 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;
>
next prev parent reply other threads:[~2017-08-03 13:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-03 12:46 [PATCH v3 0/2] mmc: sdhci: Add sdma_boundary to sdhci_host srinivas.kandagatla
2017-08-03 12:46 ` [PATCH v3 1/2] mmc: sdhci: add sdma_boundary member to struct sdhci_host srinivas.kandagatla
2017-08-03 13:14 ` Adrian Hunter
2017-08-03 12:46 ` [PATCH v3 2/2] mmc: sdhci-msm: set sdma_boundary to zero srinivas.kandagatla
2017-08-03 13:14 ` Adrian Hunter [this message]
2017-08-08 10:38 ` [PATCH v3 0/2] mmc: sdhci: Add sdma_boundary to sdhci_host Ulf Hansson
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