brcm2708: update to latest patches from RPi foundation

[openwrt/staging/dedeckeh.git] / target / linux / brcm2708 / patches-4.19 / 950-0463-mmc-sdhci-Mask-spurious-interrupts.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0463-mmc-sdhci-Mask-spurious-interrupts.patch b/target/linux/brcm2708/patches-4.19/950-0463-mmc-sdhci-Mask-spurious-interrupts.patch
new file mode 100644 (file)
index 0000000..fd5cb52
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0463-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
+@@ -2935,6 +2935,10 @@ 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);
+