4.19-stable patches

added patches:
	spi-spi-fsl-dspi-exit-the-isr-with-irq_none-when-it-s-not-ours.patch

diff --git a/queue-4.19/series b/queue-4.19/series
index 072f1b5659ec5df5c01695171446d5dc6edb9ed7..f39b14635220d5b63aa1670a4d3bc13e3fa540a5 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -13,3 +13,4 @@ drivers-firmware-psci-fix-memory-leakage-in-alloc_in.patch
 fuse-fix-weird-page-warning.patch
 irqdomain-treewide-keep-firmware-node-unconditionall.patch
 sunrpc-reverting-d03727b248d0-nfsv4-fix-close-not-waiting-for-direct-io-compeletion.patch
+spi-spi-fsl-dspi-exit-the-isr-with-irq_none-when-it-s-not-ours.patch

diff --git a/queue-4.19/spi-spi-fsl-dspi-exit-the-isr-with-irq_none-when-it-s-not-ours.patch b/queue-4.19/spi-spi-fsl-dspi-exit-the-isr-with-irq_none-when-it-s-not-ours.patch
new file mode 100644 (file)
index 0000000..c8128cf
--- /dev/null
+++ b/queue-4.19/spi-spi-fsl-dspi-exit-the-isr-with-irq_none-when-it-s-not-ours.patch
@@ -0,0 +1,41 @@
+From d41f36a6464a85c06ad920703d878e4491d2c023 Mon Sep 17 00:00:00 2001
+From: Vladimir Oltean <olteanv@gmail.com>
+Date: Fri, 23 Aug 2019 00:24:50 +0300
+Subject: spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours
+
+From: Vladimir Oltean <olteanv@gmail.com>
+
+commit d41f36a6464a85c06ad920703d878e4491d2c023 upstream.
+
+The DSPI interrupt can be shared between two controllers at least on the
+LX2160A. In that case, the driver for one controller might misbehave and
+consume the other's interrupt. Fix this by actually checking if any of
+the bits in the status register have been asserted.
+
+Fixes: 13aed2392741 ("spi: spi-fsl-dspi: use IRQF_SHARED mode to request IRQ")
+Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
+Link: https://lore.kernel.org/r/20190822212450.21420-2-olteanv@gmail.com
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Cc: stable@vger.kernel.org
+Cc: Guenter Roeck <linux@roeck-us.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/spi/spi-fsl-dspi.c |    4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/spi/spi-fsl-dspi.c
++++ b/drivers/spi/spi-fsl-dspi.c
+@@ -878,9 +878,11 @@ static irqreturn_t dspi_interrupt(int ir
+                                       trans_mode);
+                       }
+               }
++
++              return IRQ_HANDLED;
+       }
+ 
+-      return IRQ_HANDLED;
++      return IRQ_NONE;
+ }
+ 
+ static const struct of_device_id fsl_dspi_dt_ids[] = {