Commit c5d3e8fa authored Sep 08, 2019 by Ulf Hansson

mmc: core: WARN if SDIO IRQs are enabled for non-powered card in suspend



To make sure SDIO func drivers behaves correctly during system
suspend/resume, let add a WARN_ON in case the condition is a non-powered
SDIO card and there are some SDIO IRQs still being claimed.

Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

parent 2c32dbbb

drivers/mmc/core/sdio.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -951,6 +951,8 @@ static int mmc_sdio_pre_suspend(struct mmc_host *host)
		*/
		static int mmc_sdio_suspend(struct mmc_host *host)
		{
		WARN_ON(host->sdio_irqs && !mmc_card_keep_power(host));

		/* Prevent processing of SDIO IRQs in suspended state. */
		mmc_card_set_suspended(host->card);
		cancel_delayed_work_sync(&host->sdio_irq_work);

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