diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0004-spi-qup-Fix-transaction-done-signaling.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.9/0004-spi-qup-Fix-transaction-done-signaling.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0004-spi-qup-Fix-transaction-done-signaling.patch b/target/linux/ipq806x/patches-4.9/0004-spi-qup-Fix-transaction-done-signaling.patch new file mode 100644 index 0000000000..5881ffa8b6 --- /dev/null +++ b/target/linux/ipq806x/patches-4.9/0004-spi-qup-Fix-transaction-done-signaling.patch @@ -0,0 +1,29 @@ +From fbdf80d138f8c7fda8e598287109fb90446d557d 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 04/69] 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; |