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 <jszhang@xxxxxxxxxxx>
---
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
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