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From b0aa16d75f422fb369696520189c9fa7b0b12e60 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 28 Sep 2018 16:24:05 +0100
Subject: [PATCH 537/725] mmc: sdhci: Mask "spurious" interrupts
Add a filter for "spurious" Transfer Complete interrupts, attempting
to make it as specific as possible:
* INT_DATA_END (transfer complete) is set
* There is a stop command in progress
* There is no data transfer in progress
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/mmc/host/sdhci.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2930,6 +2930,10 @@ static irqreturn_t sdhci_irq(int irq, vo
result = IRQ_WAKE_THREAD;
}
+ if ((intmask & SDHCI_INT_DATA_END) && !host->data &&
+ host->cmd && (host->cmd == host->cmd->mrq->stop))
+ intmask &= ~SDHCI_INT_DATA_END;
+
if (intmask & SDHCI_INT_CMD_MASK)
sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK, &intmask);
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