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spi: cadence: Add support for context loss

Message ID 41f50cff7fd229448eb725f9d8ee97ec497457b2.1502182800.git.michal.simek@xilinx.com (mailing list archive)
State Accepted
Commit 802740890c4200c9266aee3139c5bd8e9b154e8f
Headers show

Commit Message

Michal Simek Aug. 8, 2017, 9 a.m. UTC 
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(+)
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Patch

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);
 }