[PATCH 4.14 091/137] spi: rspi: Fix invalid SPI use during system suspend
4.14-stable review patch. If anyone has any objections, please let me know. -- From: Geert Uytterhoeven commit c1ca59c22c56930b377a665fdd1b43351887830b upstream. If the SPI queue is running during system suspend, the system may lock up. Fix this by stopping/restarting the queue during system suspend/resume, by calling spi_master_suspend()/spi_master_resume() from the PM callbacks. In-kernel users will receive an -ESHUTDOWN error while system suspend/resume is in progress. Based on a patch for sh-msiof by Gaku Inami. Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown Cc: sta...@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-rspi.c | 24 1 file changed, 24 insertions(+) --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -1352,12 +1352,36 @@ static const struct platform_device_id s MODULE_DEVICE_TABLE(platform, spi_driver_ids); +#ifdef CONFIG_PM_SLEEP +static int rspi_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct rspi_data *rspi = platform_get_drvdata(pdev); + + return spi_master_suspend(rspi->master); +} + +static int rspi_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct rspi_data *rspi = platform_get_drvdata(pdev); + + return spi_master_resume(rspi->master); +} + +static SIMPLE_DEV_PM_OPS(rspi_pm_ops, rspi_suspend, rspi_resume); +#define DEV_PM_OPS _pm_ops +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ + static struct platform_driver rspi_driver = { .probe =rspi_probe, .remove = rspi_remove, .id_table = spi_driver_ids, .driver = { .name = "renesas_spi", + .pm = DEV_PM_OPS, .of_match_table = of_match_ptr(rspi_of_match), }, };
[PATCH 4.14 091/137] spi: rspi: Fix invalid SPI use during system suspend
4.14-stable review patch. If anyone has any objections, please let me know. -- From: Geert Uytterhoeven commit c1ca59c22c56930b377a665fdd1b43351887830b upstream. If the SPI queue is running during system suspend, the system may lock up. Fix this by stopping/restarting the queue during system suspend/resume, by calling spi_master_suspend()/spi_master_resume() from the PM callbacks. In-kernel users will receive an -ESHUTDOWN error while system suspend/resume is in progress. Based on a patch for sh-msiof by Gaku Inami. Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown Cc: sta...@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-rspi.c | 24 1 file changed, 24 insertions(+) --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -1352,12 +1352,36 @@ static const struct platform_device_id s MODULE_DEVICE_TABLE(platform, spi_driver_ids); +#ifdef CONFIG_PM_SLEEP +static int rspi_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct rspi_data *rspi = platform_get_drvdata(pdev); + + return spi_master_suspend(rspi->master); +} + +static int rspi_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct rspi_data *rspi = platform_get_drvdata(pdev); + + return spi_master_resume(rspi->master); +} + +static SIMPLE_DEV_PM_OPS(rspi_pm_ops, rspi_suspend, rspi_resume); +#define DEV_PM_OPS _pm_ops +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ + static struct platform_driver rspi_driver = { .probe =rspi_probe, .remove = rspi_remove, .id_table = spi_driver_ids, .driver = { .name = "renesas_spi", + .pm = DEV_PM_OPS, .of_match_table = of_match_ptr(rspi_of_match), }, };