On 29.05.2018 22:15, Boris Brezillon wrote: > On Wed, 23 May 2018 19:08:48 +0300 > Claudiu Beznea <[email protected]> wrote: > >> Implement suspend/resume hooks. >> >> Signed-off-by: Claudiu Beznea <[email protected]> >> --- >> drivers/mtd/spi-nor/atmel-quadspi.c | 23 +++++++++++++++++++++++ >> 1 file changed, 23 insertions(+) >> >> diff --git a/drivers/mtd/spi-nor/atmel-quadspi.c >> b/drivers/mtd/spi-nor/atmel-quadspi.c >> index 6c5708bacad8..85d7610fb920 100644 >> --- a/drivers/mtd/spi-nor/atmel-quadspi.c >> +++ b/drivers/mtd/spi-nor/atmel-quadspi.c >> @@ -737,6 +737,28 @@ static int atmel_qspi_remove(struct platform_device >> *pdev) >> return 0; >> } >> >> +#ifdef CONFIG_PM_SLEEP >> +static int atmel_qspi_suspend(struct device *dev) >> +{ >> + struct atmel_qspi *aq = dev_get_drvdata(dev); >> + >> + clk_disable_unprepare(aq->clk); >> + >> + return 0; >> +} >> + >> +static int atmel_qspi_resume(struct device *dev) >> +{ >> + struct atmel_qspi *aq = dev_get_drvdata(dev); >> + >> + clk_prepare_enable(aq->clk); >> + >> + return atmel_qspi_init(aq); >> +} >> +#endif > > You can avoid this #ifdef section if you use the __maybe_unused > specifier: > > static __maybe_unused int atmel_qspi_suspend(struct device *dev) > ... I balanced b/w using #ifdef and __maybe_unused. I will prepare a new version to replace #ifdef with __maybe_unsed. Thank you, Claudiu Beznea > >> + >> +static SIMPLE_DEV_PM_OPS(atmel_qspi_pm_ops, atmel_qspi_suspend, >> + atmel_qspi_resume); >> >> static const struct of_device_id atmel_qspi_dt_ids[] = { >> { .compatible = "atmel,sama5d2-qspi" }, >> @@ -749,6 +771,7 @@ static struct platform_driver atmel_qspi_driver = { >> .driver = { >> .name = "atmel_qspi", >> .of_match_table = atmel_qspi_dt_ids, >> + .pm = &atmel_qspi_pm_ops, >> }, >> .probe = atmel_qspi_probe, >> .remove = atmel_qspi_remove, > >
