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The MMC layer uses the standard work queue for doing card detection. As this queue is shared with other crucial subsystems, the effects of a long (and perhaps buggy) detection can cause the system to be unusable. E.g. the keyboard stops working while the detection routine is running. The solution is to add a specific mmc work queue to run the detection code in. This is similar to how other subsystems handle detection (a full kernel thread is the most common theme). Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
26 lines
893 B
C
26 lines
893 B
C
/*
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* linux/drivers/mmc/mmc.h
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*
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* Copyright (C) 2003 Russell King, All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _MMC_H
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#define _MMC_H
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/* core-internal functions */
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void mmc_init_card(struct mmc_card *card, struct mmc_host *host);
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int mmc_register_card(struct mmc_card *card);
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void mmc_remove_card(struct mmc_card *card);
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struct mmc_host *mmc_alloc_host_sysfs(int extra, struct device *dev);
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int mmc_add_host_sysfs(struct mmc_host *host);
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void mmc_remove_host_sysfs(struct mmc_host *host);
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void mmc_free_host_sysfs(struct mmc_host *host);
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int mmc_schedule_work(struct work_struct *work);
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int mmc_schedule_delayed_work(struct work_struct *work, unsigned long delay);
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void mmc_flush_scheduled_work(void);
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#endif
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