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Revision 30f92d62e5b41a94de2d0bbd677a6ea2fcfed74f authored by Akinobu Mita on 06 September 2017, 10:15:31 UTC, committed by Christoph Hellwig on 11 September 2017, 16:29:38 UTC 
nvme-pci: use appropriate initial chunk size for HMB allocation
 
The initial chunk size for host memory buffer allocation is currently
PAGE_SIZE << MAX_ORDER.  MAX_ORDER order allocation is usually failed
without CONFIG_DMA_CMA.  So the HMB allocation is retried with chunk size
PAGE_SIZE << (MAX_ORDER - 1) in general, but there is no problem if the
retry allocation works correctly.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
[hch: rebased]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Cc: stable@vger.kernel.org
1 parent 92dc689
Raw File
mc13xxx.h 
/*
 * Copyright 2012 Creative Product Design
 * Marc Reilly <marc@cpdesign.com.au>
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2 as published by the
 * Free Software Foundation.
 */
#ifndef __DRIVERS_MFD_MC13XXX_H
#define __DRIVERS_MFD_MC13XXX_H

#include <linux/mutex.h>
#include <linux/regmap.h>
#include <linux/mfd/mc13xxx.h>

#define MC13XXX_NUMREGS		0x3f
#define MC13XXX_IRQ_REG_CNT	2
#define MC13XXX_IRQ_PER_REG	24

struct mc13xxx;

struct mc13xxx_variant {
	const char *name;
	void (*print_revision)(struct mc13xxx *mc13xxx, u32 revision);
};

extern struct mc13xxx_variant
		mc13xxx_variant_mc13783,
		mc13xxx_variant_mc13892,
		mc13xxx_variant_mc34708;

struct mc13xxx {
	struct regmap *regmap;

	struct device *dev;
	const struct mc13xxx_variant *variant;

	struct regmap_irq irqs[MC13XXX_IRQ_PER_REG * MC13XXX_IRQ_REG_CNT];
	struct regmap_irq_chip irq_chip;
	struct regmap_irq_chip_data *irq_data;

	struct mutex lock;
	int irq;
	int flags;

	int adcflags;
};

int mc13xxx_common_init(struct device *dev);
int mc13xxx_common_exit(struct device *dev);

#endif /* __DRIVERS_MFD_MC13XXX_H */
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