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[v2,2/2] mmc: sdhci-msm: set sdma_buffer_boundary_arg to zero

Message ID 20170802083807.26280-3-srinivas.kandagatla@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Srinivas Kandagatla Aug. 2, 2017, 8:38 a.m. UTC 
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>
---
 drivers/mmc/host/sdhci-msm.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 9d601dc0d646..bb699c0247ef 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_buffer_boundary_arg = 0;
 	pltfm_host = sdhci_priv(host);
 	msm_host = sdhci_pltfm_priv(pltfm_host);
 	msm_host->mmc = host->mmc;