[PATCH] spi: cadence: Add support for context loss

[PATCH] spi: cadence: Add support for context loss

[Michal Simek]

From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>

Context could be lost across the suspend and resume.
Reinit the driver to tide over.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

 drivers/spi/spi-cadence.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c
index 5e02f9b91688..5c9516ae4942 100644
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -704,7 +704,9 @@ static int __maybe_unused cdns_spi_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct spi_master *master = platform_get_drvdata(pdev);
+	struct cdns_spi *xspi = spi_master_get_devdata(master);
 
+	cdns_spi_init_hw(xspi);
 	return spi_master_resume(master);
 }
 
-- 
1.9.1

Applied "spi: cadence: Add support for context loss" to the spi tree

[Mark Brown]

The patch

   spi: cadence: Add support for context loss

has been applied to the spi tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 802740890c4200c9266aee3139c5bd8e9b154e8f Mon Sep 17 00:00:00 2001
From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Date: Tue, 8 Aug 2017 11:00:03 +0200
Subject: [PATCH] spi: cadence: Add support for context loss

Context could be lost across the suspend and resume.
Reinit the driver to tide over.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/spi/spi-cadence.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c
index 5e02f9b91688..5c9516ae4942 100644
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -704,7 +704,9 @@ static int __maybe_unused cdns_spi_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct spi_master *master = platform_get_drvdata(pdev);
+	struct cdns_spi *xspi = spi_master_get_devdata(master);
 
+	cdns_spi_init_hw(xspi);
 	return spi_master_resume(master);
 }
 
-- 
2.13.2