Hi, On Sun, Sep 8, 2019 at 3:12 AM Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote: > > In cases when SDIO IRQs have been enabled, runtime suspend is prevented by > the driver. However, this still means dw_mci_runtime_suspend|resume() gets > called during system suspend/resume, via pm_runtime_force_suspend|resume(). > This means during system suspend/resume, the register context of the dw_mmc > device most likely loses its register context, even in cases when SDIO IRQs > have been enabled. > > To re-enable the SDIO IRQs during system resume, the dw_mmc driver > currently relies on the mmc core to re-enable the SDIO IRQs when it resumes > the SDIO card, but this isn't the recommended solution. Instead, it's > better to deal with this locally in the dw_mmc driver, so let's do that. > > Tested-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > --- > drivers/mmc/host/dw_mmc.c | 4 ++++ > 1 file changed, 4 insertions(+) Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
