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36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
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From 8e830bd17e945e74964a5b61353d74e34c0791cd Mon Sep 17 00:00:00 2001
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From: Andy Gross <andy.gross@linaro.org>
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Date: Fri, 29 Jan 2016 22:06:50 -0600
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Subject: [PATCH] spi: qup: Fix transaction done signaling
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Wait to signal done until we get all of the interrupts we are expecting
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to get for a transaction. If we don't wait for the input done flag, we
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can be inbetween transactions when the done flag comes in and this can
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mess up the next transaction.
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Change-Id: I08d78376e71590663158d6434a3fb7c0623264c9
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CC: Grant Grundler <grundler@chromium.org>
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CC: Sarthak Kukreti <skukreti@codeaurora.org>
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Signed-off-by: Andy Gross <andy.gross@linaro.org>
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---
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drivers/spi/spi-qup.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
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index 714fd4e..fe629f2 100644
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--- a/drivers/spi/spi-qup.c
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+++ b/drivers/spi/spi-qup.c
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@@ -447,7 +447,8 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id)
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controller->xfer = xfer;
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spin_unlock_irqrestore(&controller->lock, flags);
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- if (controller->rx_bytes == xfer->len || error)
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+ if ((controller->rx_bytes == xfer->len &&
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+ (opflags & QUP_OP_MAX_INPUT_DONE_FLAG)) || error)
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complete(&controller->done);
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return IRQ_HANDLED;
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--
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2.7.2
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