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authorJohn Crispin <john@phrozen.org>2017-03-13 13:30:10 +0100
committerFelix Fietkau <nbd@nbd.name>2017-03-13 13:40:55 +0100
commit1adf51702e94063fb058ce13226ec5a04d15cfd4 (patch)
tree00fb0f446f516289abb93ff78f103294254545c3 /target/linux/ipq806x/patches-4.9/0010-spi-qup-properly-detect-extra-interrupts.patch
parent99b6aefd638c7934136ffcde271e6fc3f4f6c464 (diff)
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ipq806x: clean up patches, port missing patches from 4.4
Signed-off-by: John Crispin <john@phrozen.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0010-spi-qup-properly-detect-extra-interrupts.patch')
-rw-r--r--target/linux/ipq806x/patches-4.9/0010-spi-qup-properly-detect-extra-interrupts.patch61
1 files changed, 0 insertions, 61 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0010-spi-qup-properly-detect-extra-interrupts.patch b/target/linux/ipq806x/patches-4.9/0010-spi-qup-properly-detect-extra-interrupts.patch
deleted file mode 100644
index 74ef25a..0000000
--- a/target/linux/ipq806x/patches-4.9/0010-spi-qup-properly-detect-extra-interrupts.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From 543618f5388d487ba88e3d5304c161fc3ccf61d1 Mon Sep 17 00:00:00 2001
-From: Matthew McClintock <mmcclint@codeaurora.org>
-Date: Thu, 10 Mar 2016 16:44:55 -0600
-Subject: [PATCH 10/37] spi: qup: properly detect extra interrupts
-
-It's possible for a SPI transaction to complete and get another
-interrupt and have it processed on the same spi_transfer before the
-transfer_one can set it to NULL.
-
-This masks unexpected interrupts, so let's set the spi_transfer to
-NULL in the interrupt once the transaction is done. So we can
-properly detect these bad interrupts and print warning messages.
-
-Signed-off-by: Matthew McClintock <mmcclint@codeaurora.org>
----
- drivers/spi/spi-qup.c | 15 +++++++++------
- 1 file changed, 9 insertions(+), 6 deletions(-)
-
---- a/drivers/spi/spi-qup.c
-+++ b/drivers/spi/spi-qup.c
-@@ -507,6 +507,7 @@ static irqreturn_t spi_qup_qup_irq(int i
- u32 opflags, qup_err, spi_err;
- unsigned long flags;
- int error = 0;
-+ bool done = 0;
-
- spin_lock_irqsave(&controller->lock, flags);
- xfer = controller->xfer;
-@@ -565,16 +566,19 @@ static irqreturn_t spi_qup_qup_irq(int i
- spi_qup_write(controller, xfer);
- }
-
-- spin_lock_irqsave(&controller->lock, flags);
-- controller->error = error;
-- controller->xfer = xfer;
-- spin_unlock_irqrestore(&controller->lock, flags);
--
- /* re-read opflags as flags may have changed due to actions above */
- opflags = readl_relaxed(controller->base + QUP_OPERATIONAL);
-
- if ((controller->rx_bytes == xfer->len &&
- (opflags & QUP_OP_MAX_INPUT_DONE_FLAG)) || error)
-+ done = true;
-+
-+ spin_lock_irqsave(&controller->lock, flags);
-+ controller->error = error;
-+ controller->xfer = done ? NULL : xfer;
-+ spin_unlock_irqrestore(&controller->lock, flags);
-+
-+ if (done)
- complete(&controller->done);
-
- return IRQ_HANDLED;
-@@ -767,7 +771,6 @@ static int spi_qup_transfer_one(struct s
- exit:
- spi_qup_set_state(controller, QUP_STATE_RESET);
- spin_lock_irqsave(&controller->lock, flags);
-- controller->xfer = NULL;
- if (!ret)
- ret = controller->error;
- spin_unlock_irqrestore(&controller->lock, flags);