diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.4/715-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.4/715-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.4/715-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch b/target/linux/ipq806x/patches-4.4/715-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch new file mode 100644 index 0000000000..54711a1d05 --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/715-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch @@ -0,0 +1,32 @@ +From f57ff801665b868d8607c9e872466b54982564bc Mon Sep 17 00:00:00 2001 +From: Matthew McClintock <mmcclint@codeaurora.org> +Date: Thu, 10 Mar 2016 16:48:27 -0600 +Subject: [PATCH] spi: qup: don't re-read opflags to see if transaction is done + for reads + +For reads, we will get another interrupt so we need to handle things +then. For writes, we can finish up now. + +Change-Id: I4fa95ae7bb9d78f8ba54c613b981b37d4ea81d7e +Signed-off-by: Matthew McClintock <mmcclint@codeaurora.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 45e30c7..59bc37c 100644 +--- a/drivers/spi/spi-qup.c ++++ b/drivers/spi/spi-qup.c +@@ -569,7 +569,8 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id) + } + + /* re-read opflags as flags may have changed due to actions above */ +- opflags = readl_relaxed(controller->base + QUP_OPERATIONAL); ++ if (opflags & QUP_OP_OUT_SERVICE_FLAG) ++ opflags = readl_relaxed(controller->base + QUP_OPERATIONAL); + + if ((controller->rx_bytes == xfer->len && + (opflags & QUP_OP_MAX_INPUT_DONE_FLAG)) || error) +-- +2.7.2 + |