diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0008-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.9/0008-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0008-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch b/target/linux/ipq806x/patches-4.9/0008-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch new file mode 100644 index 0000000000..9893596982 --- /dev/null +++ b/target/linux/ipq806x/patches-4.9/0008-spi-qup-don-t-re-read-opflags-to-see-if-transaction-.patch @@ -0,0 +1,26 @@ +From 9864f39695aefe0831b3c6e86c0dff30489ad580 Mon Sep 17 00:00:00 2001 +From: Matthew McClintock <mmcclint@codeaurora.org> +Date: Thu, 10 Mar 2016 16:48:27 -0600 +Subject: [PATCH 08/69] 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. + +Signed-off-by: Matthew McClintock <mmcclint@codeaurora.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 +@@ -567,7 +567,8 @@ static irqreturn_t spi_qup_qup_irq(int i + } + + /* 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) |