From 8dc003359cc3996abad9e53a7b2280b272610283 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Thu, 8 Sep 2005 17:53:01 +0100 Subject: [PATCH] [MMC] Allow detection/removal to be delayed Change mmc_detect_change() to take a delay argument such that the detection of card insertions and removals can be delayed according to the requirements of the host driver or platform. Signed-off-by: Richard Purdie Signed-off-by: Russell King --- drivers/mmc/mmc.c | 12 ++++++++---- drivers/mmc/mmci.c | 2 +- drivers/mmc/pxamci.c | 2 +- drivers/mmc/wbsd.c | 4 ++-- include/linux/mmc/host.h | 2 +- 5 files changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 0a117c61cd..ceae379a4d 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1079,13 +1079,17 @@ static void mmc_setup(struct mmc_host *host) /** * mmc_detect_change - process change of state on a MMC socket * @host: host which changed state. + * @delay: optional delay to wait before detection (jiffies) * * All we know is that card(s) have been inserted or removed * from the socket(s). We don't know which socket or cards. */ -void mmc_detect_change(struct mmc_host *host) +void mmc_detect_change(struct mmc_host *host, unsigned long delay) { - schedule_work(&host->detect); + if (delay) + schedule_delayed_work(&host->detect, delay); + else + schedule_work(&host->detect); } EXPORT_SYMBOL(mmc_detect_change); @@ -1189,7 +1193,7 @@ int mmc_add_host(struct mmc_host *host) ret = mmc_add_host_sysfs(host); if (ret == 0) { mmc_power_off(host); - mmc_detect_change(host); + mmc_detect_change(host, 0); } return ret; @@ -1259,7 +1263,7 @@ EXPORT_SYMBOL(mmc_suspend_host); */ int mmc_resume_host(struct mmc_host *host) { - mmc_detect_change(host); + mmc_detect_change(host, 0); return 0; } diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c index 716c4ef4fa..91c74843dc 100644 --- a/drivers/mmc/mmci.c +++ b/drivers/mmc/mmci.c @@ -442,7 +442,7 @@ static void mmci_check_status(unsigned long data) status = host->plat->status(mmc_dev(host->mmc)); if (status ^ host->oldstat) - mmc_detect_change(host->mmc); + mmc_detect_change(host->mmc, 0); host->oldstat = status; mod_timer(&host->timer, jiffies + HZ); diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/pxamci.c index e99a53b09e..5223cd3bfc 100644 --- a/drivers/mmc/pxamci.c +++ b/drivers/mmc/pxamci.c @@ -423,7 +423,7 @@ static void pxamci_dma_irq(int dma, void *devid, struct pt_regs *regs) static irqreturn_t pxamci_detect_irq(int irq, void *devid, struct pt_regs *regs) { - mmc_detect_change(devid); + mmc_detect_change(devid, 0); return IRQ_HANDLED; } diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c index dec01d38c7..a62c86fef5 100644 --- a/drivers/mmc/wbsd.c +++ b/drivers/mmc/wbsd.c @@ -1122,7 +1122,7 @@ static void wbsd_detect_card(unsigned long data) DBG("Executing card detection\n"); - mmc_detect_change(host->mmc); + mmc_detect_change(host->mmc, 0); } /* @@ -1198,7 +1198,7 @@ static void wbsd_tasklet_card(unsigned long param) */ spin_unlock(&host->lock); - mmc_detect_change(host->mmc); + mmc_detect_change(host->mmc, 0); } else spin_unlock(&host->lock); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 6014160d9c..c5d73c0cf6 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -123,7 +123,7 @@ extern void mmc_free_host(struct mmc_host *); extern int mmc_suspend_host(struct mmc_host *, pm_message_t); extern int mmc_resume_host(struct mmc_host *); -extern void mmc_detect_change(struct mmc_host *); +extern void mmc_detect_change(struct mmc_host *, unsigned long delay); extern void mmc_request_done(struct mmc_host *, struct mmc_request *); #endif -- 2.39.5