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

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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>
This commit is contained in:
Ulf Hansson 2019-09-08 12:12:32 +02:00
parent 2c32dbbb5f
commit c5d3e8fa1a
1 changed files with 2 additions and 0 deletions
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2
drivers/mmc/core/sdio.c
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@ -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);