aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/brcm2708/patches-4.19/950-0487-mmc-sdhci-Mask-spurious-interrupts.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0487-mmc-sdhci-Mask-spurious-interrupts.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0487-mmc-sdhci-Mask-spurious-interrupts.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0487-mmc-sdhci-Mask-spurious-interrupts.patch b/target/linux/brcm2708/patches-4.19/950-0487-mmc-sdhci-Mask-spurious-interrupts.patch
new file mode 100644
index 0000000000..1aa0a17965
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0487-mmc-sdhci-Mask-spurious-interrupts.patch
@@ -0,0 +1,29 @@
+From be309b7db77215610d5ac15bf0aacd47ea5b3433 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 28 Sep 2018 16:24:05 +0100
+Subject: [PATCH] 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
+@@ -2937,6 +2937,10 @@ 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);
+