linux-kernel - [PATCH] mmc: sdhci-of-at91: fix card detect when using runtime PM

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Date:	Thu, 11 Feb 2016 14:48:57 +0100
From:	Ludovic Desroches <ludovic.desroches@...el.com>
To:	<ulf.hansson@...aro.org>
CC:	<linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<nicolas.ferre@...el.com>, <adrian.hunter@...el.com>,
	Ludovic Desroches <ludovic.desroches@...el.com>
Subject: [PATCH] mmc: sdhci-of-at91: fix card detect when using runtime PM

Add quirk broken card detection to enable card detection polling. It is
a short term solution until reworking PM stuff.

If the card detect signal is connected to the sdhci controller and not a
gpio, when runtime PM suspend happens, we have no way to wake up on a card
detect event since these irqs are no more enabled.

Signed-off-by: Ludovic Desroches <ludovic.desroches@...el.com>
Fixes: f5f17813ae9b ("mmc: sdhci-of-at91: add PM support")
---
 drivers/mmc/host/sdhci-of-at91.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 9cb86fb..efec736 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -45,6 +45,7 @@ static const struct sdhci_ops sdhci_at91_sama5d2_ops = {
 
 static const struct sdhci_pltfm_data soc_data_sama5d2 = {
 	.ops = &sdhci_at91_sama5d2_ops,
+	.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION,
 	.quirks2 = SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST,
 };
 
-- 
2.7.0