Messages in this thread | | | Subject | Re: [PATCH] mtd: atmel-quadspi: add suspend/resume hooks | From | Claudiu Beznea <> | Date | Mon, 4 Jun 2018 10:43:06 +0300 |
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On 29.05.2018 22:15, Boris Brezillon wrote: > On Wed, 23 May 2018 19:08:48 +0300 > Claudiu Beznea <claudiu.beznea@microchip.com> wrote: > >> Implement suspend/resume hooks. >> >> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> >> --- >> 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, > >
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