From: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Work around lockdep issue when card detect IRQ handlers run in
thread context ... it forces IRQF_DISABLED, which prevents all
access to twl4030 card detect signals.
Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
---
With so many OMAP3 boards having only one MMC/SD slot, used
for rootfs by developers, it's no surprise this hasn't been
noticed before!
drivers/mmc/host/omap_hsmmc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -568,6 +568,9 @@ static void mmc_omap_detect(struct work_
{
struct mmc_omap_host *host = container_of(work, struct mmc_omap_host,
mmc_carddetect_work);
+ struct omap_mmc_slot_data *slot = &mmc_slot(host);
+
+ host->carddetect = slot->card_detect(slot->card_detect_irq);
sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch");
mmc_omap_fclk_state(host, ON);
@@ -591,7 +594,6 @@ static irqreturn_t omap_mmc_cd_handler(i
{
struct mmc_omap_host *host = (struct mmc_omap_host *)dev_id;
- host->carddetect = mmc_slot(host).card_detect(irq);
schedule_work(&host->mmc_carddetect_work);
return IRQ_HANDLED;
--
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