diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.4/711-spi-qup-Fix-transaction-done-signaling.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.4/711-spi-qup-Fix-transaction-done-signaling.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.4/711-spi-qup-Fix-transaction-done-signaling.patch b/target/linux/ipq806x/patches-4.4/711-spi-qup-Fix-transaction-done-signaling.patch new file mode 100644 index 0000000000..dd4bad344b --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/711-spi-qup-Fix-transaction-done-signaling.patch @@ -0,0 +1,35 @@ +From 8e830bd17e945e74964a5b61353d74e34c0791cd 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] 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. + +Change-Id: I08d78376e71590663158d6434a3fb7c0623264c9 +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(-) + +diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c +index 714fd4e..fe629f2 100644 +--- a/drivers/spi/spi-qup.c ++++ b/drivers/spi/spi-qup.c +@@ -447,7 +447,8 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id) + 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; +-- +2.7.2 + |