Lars-Peter Clausen 92ab1aab59 regmap: Make regmap-mmio usable from atomic contexts ... regmap-mmio uses a spinlock with spin_lock() and spin_unlock() for locking. To be able to use the regmap API from different contexts (atomic vs non-atomic), without the risk of race conditions, we need to use spin_lock_irqsave() and spin_lock_irqrestore() instead. A new field, the spinlock_flags field, is added to regmap struct to store the flags between regmap_{,un}lock_spinlock(). The spinlock_flags field itself is also protected by the spinlock. Thanks to Stephen Warren for the suggestion of this particular solution. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>		2013-05-25 11:16:02 -04:00
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internal.h	regmap: Make regmap-mmio usable from atomic contexts	2013-05-25 11:16:02 -04:00
Kconfig	regmap: select REGMAP if REGMAP_MMIO and REGMAP_IRQ enabled	2012-10-17 22:09:35 +09:00
Makefile	regmap: flat: Add flat cache type	2013-01-02 10:58:53 +00:00
regcache-flat.c	regmap: flat: Add flat cache type	2013-01-02 10:58:53 +00:00
regcache-lzo.c	regmap: cache: Pass the map rather than the word size when updating values	2013-03-04 10:30:27 +08:00
regcache-rbtree.c	regmap: regcache: Fixup locking for custom lock callbacks	2013-05-23 09:07:33 -05:00
regcache.c	regmap: regcache: Fixup locking for custom lock callbacks	2013-05-23 09:07:33 -05:00
regmap-debugfs.c	regmap: debugfs: Add a registers `range' file	2013-03-04 10:33:03 +08:00
regmap-i2c.c	i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING	2012-05-30 10:55:34 +02:00
regmap-irq.c	regmap: irq: Clarify error message when we fail to request primary IRQ	2013-03-19 10:50:56 +00:00
regmap-mmio.c	regmap: mmio: add register clock support	2013-02-14 16:40:28 +00:00
regmap-spi.c	regmap: spi: Handle allocation failures gracefully	2013-02-05 14:14:32 +00:00
regmap.c	regmap: Make regmap-mmio usable from atomic contexts	2013-05-25 11:16:02 -04:00