Mika Westerberg 1cd75cf191 i2c: designware: always clear interrupts before enabling them ... commit 2a2d95e9d6 upstream. If the I2C bus is put to a low power state by an ACPI method it might pull the SDA line low (as its power is removed). Once the bus is put to full power state again, the SDA line is pulled back to high. This transition looks like a STOP condition from the controller point-of-view which sets STOP detected bit in its status register causing the driver to fail subsequent transfers. Fix this by always clearing all interrupts before we start a transfer. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-05-24 11:14:22 -07:00
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algos	i2c-algo-bit: Don't resched on clock stretching	2012-03-26 21:47:19 +02:00
busses	i2c: designware: always clear interrupts before enabling them	2013-05-24 11:14:22 -07:00
muxes	i2c: Convert drivers/i2c/muxes/* to use module_i2c_driver()	2012-03-26 21:47:19 +02:00
i2c-boardinfo.c	i2c: Update the FSF address	2012-03-26 21:47:19 +02:00
i2c-core.c	i2c: Update the FSF address	2012-03-26 21:47:19 +02:00
i2c-core.h	i2c: Update the FSF address	2012-03-26 21:47:19 +02:00
i2c-dev.c	i2c: Update the FSF address	2012-03-26 21:47:19 +02:00
i2c-mux.c	i2c: Mark i2c_adapter.id as deprecated	2010-11-15 22:40:38 +01:00
i2c-smbus.c	i2c: Update the FSF address	2012-03-26 21:47:19 +02:00
Kconfig	doc: Kconfig: Typo: square -> squared	2011-07-11 14:22:32 +02:00
Makefile	i2c: Deprecate i2c_driver.attach_adapter and .detach_adapter	2011-03-20 14:50:53 +01:00