We found one issue on BG4CT platforms with GPIO for sdcar card detect interrupt: remove sdcard when there's read write access to the sdcard, sometimes the card remove event can't be handled for a long time, so the system still think the sdcard is still plugged in. It turns out that the sdhci_card_event() is missing in common slot gpio's card detect isr.
We fix this issue by providing sdhci's own isr for card-detect interrupts. In this own isr, we call sdhci_card_event() then process the change of state. Signed-off-by: Jisheng Zhang <[email protected]> --- drivers/mmc/host/sdhci.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 63bc33a54d0d..b6c5021a5892 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2777,6 +2777,16 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) return result; } +static irqreturn_t sdhci_cd_irq(int irq, void *dev_id) +{ + struct mmc_host *mmc = dev_id; + struct sdhci_host *host = mmc_priv(mmc); + + mmc->ops->card_event(mmc); + mmc_detect_change(host->mmc, msecs_to_jiffies(200)); + return IRQ_HANDLED; +} + static irqreturn_t sdhci_thread_irq(int irq, void *dev_id) { struct sdhci_host *host = dev_id; @@ -3617,6 +3627,8 @@ int __sdhci_add_host(struct sdhci_host *host) sdhci_init(host, 0); + mmc_gpio_set_cd_isr(mmc, sdhci_cd_irq); + ret = request_threaded_irq(host->irq, sdhci_irq, sdhci_thread_irq, IRQF_SHARED, mmc_hostname(mmc), host); if (ret) { -- 2.11.0
