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-rw-r--r--target/linux/ipq806x/patches-4.9/0007-spi-qup-Fix-transaction-done-signaling.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0007-spi-qup-Fix-transaction-done-signaling.patch b/target/linux/ipq806x/patches-4.9/0007-spi-qup-Fix-transaction-done-signaling.patch
new file mode 100644
index 0000000000..b42f8cdc1a
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.9/0007-spi-qup-Fix-transaction-done-signaling.patch
@@ -0,0 +1,29 @@
+From 826290ee1fd1bcd26b6771f94f6680a4ff8951c4 Mon Sep 17 00:00:00 2001
+From: Andy Gross <andy.gross@linaro.org>
+Date: Fri, 29 Jan 2016 22:06:50 -0600
+Subject: [PATCH 07/37] spi: qup: Fix transaction done signaling
+
+Wait to signal done until we get all of the interrupts we are expecting
+to get for a transaction. If we don't wait for the input done flag, we
+can be inbetween transactions when the done flag comes in and this can
+mess up the next transaction.
+
+CC: Grant Grundler <grundler@chromium.org>
+CC: Sarthak Kukreti <skukreti@codeaurora.org>
+Signed-off-by: Andy Gross <andy.gross@linaro.org>
+---
+ drivers/spi/spi-qup.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/spi/spi-qup.c
++++ b/drivers/spi/spi-qup.c
+@@ -445,7 +445,8 @@ static irqreturn_t spi_qup_qup_irq(int i
+ controller->xfer = xfer;
+ spin_unlock_irqrestore(&controller->lock, flags);
+
+- if (controller->rx_bytes == xfer->len || error)
++ if ((controller->rx_bytes == xfer->len &&
++ (opflags & QUP_OP_MAX_INPUT_DONE_FLAG)) || error)
+ complete(&controller->done);
+
+ return IRQ_HANDLED;