linux-kernel - [PATCH] mmc: sdhci-msm: Do not reset the controller if no card in the slot

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Date:	Fri, 24 Jun 2016 19:24:59 +0300
From:	Georgi Djakov <georgi.djakov@...aro.org>
To:	ulf.hansson@...aro.org
Cc:	adrian.hunter@...el.com, iivanov.xz@...il.com,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, georgi.djakov@...aro.org
Subject: [PATCH] mmc: sdhci-msm: Do not reset the controller if no card in the slot

The controller does not clear the "reset bit" when it is reset without
a card in the slot. Because of this, the following error message is seen
while booting with no plugged SD card.

mmc1: Reset 0x1 never completed.

Add the SDHCI_QUIRK_NO_CARD_NO_RESET quirk to avoid this.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@...aro.org>
Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
---
 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 ac5700233e12..c613137ae91e 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -477,6 +477,7 @@ static const struct sdhci_ops sdhci_msm_ops = {
 
 static const struct sdhci_pltfm_data sdhci_msm_pdata = {
 	.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+		  SDHCI_QUIRK_NO_CARD_NO_RESET |
 		  SDHCI_QUIRK_SINGLE_POWER_WRITE,
 	.ops = &sdhci_msm_ops,
 };