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mmc: core: remove check of host->removed for rescan routine

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The intention of this check was to prevent the conflict between
hotplug and removing driver for whatever reason. Currently it
doesn't improve anything and the following rescan process could
still saftly perform the scan flow. So these code seems pointless
now and let's remove them.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin 2017-07-19 15:50:56 +08:00 committed by Ulf Hansson
parent ccd3e4c8c2
commit 1896f14006
2 changed files with 0 additions and 16 deletions
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13
drivers/mmc/core/core.c
View file

@ -1769,13 +1769,6 @@ void mmc_detach_bus(struct mmc_host *host)
static void _mmc_detect_change(struct mmc_host *host, unsigned long delay,
bool cd_irq)
{
#ifdef CONFIG_MMC_DEBUG
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
WARN_ON(host->removed);
spin_unlock_irqrestore(&host->lock, flags);
#endif
/*
* If the device is configured as wakeup, we prevent a new sleep for
* 5 s to give provision for user space to consume the event.
@ -2646,12 +2639,6 @@ void mmc_start_host(struct mmc_host *host)
void mmc_stop_host(struct mmc_host *host)
{
#ifdef CONFIG_MMC_DEBUG
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
host->removed = 1;
spin_unlock_irqrestore(&host->lock, flags);
#endif
if (host->slot.cd_irq >= 0) {
if (host->slot.cd_wake_enabled)
disable_irq_wake(host->slot.cd_irq);

3
include/linux/mmc/host.h
View file

@ -328,9 +328,6 @@ struct mmc_host {
unsigned int use_spi_crc:1;
unsigned int claimed:1; /* host exclusively claimed */
unsigned int bus_dead:1; /* bus has been released */
#ifdef CONFIG_MMC_DEBUG
unsigned int removed:1; /* host is being removed */
#endif
unsigned int can_retune:1; /* re-tuning can be used */
unsigned int doing_retune:1; /* re-tuning in progress */
unsigned int retune_now:1; /* do re-tuning at next req */