Jon Povey 4bba0fd8d1 i2c-davinci: Fix race when setting up for TX ... When setting up to transmit, a race exists between the ISR and i2c_davinci_xfer_msg() trying to load the first byte and adjust counters. This is mostly visible for transmits > 1 byte long. The hardware starts sending immediately that MDR is loaded. IMR trickery doesn't work because if we start sending, finish the first byte and an XRDY event occurs before we load IMR to unmask it, we never get an interrupt, and we timeout. Move the MDR load after DXR,IMR loads to avoid this race without locking. Tested on DM355 connected to Techwell TW2836 and Wolfson WM8985 Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk> Signed-off-by: Ben Dooks <ben-linux@fluff.org>		2010-09-28 00:05:08 +01:00
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algos	i2c-algo-pca: Fix coding style issues	2010-05-21 18:41:00 +02:00
busses	i2c-davinci: Fix race when setting up for TX	2010-09-28 00:05:08 +01:00
muxes	i2c: I2C bus multiplexer driver pca954x	2010-08-11 18:21:03 +02:00
i2c-boardinfo.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
i2c-core.c	i2c: Multiplexed I2C bus core support	2010-08-11 18:21:02 +02:00
i2c-core.h	i2c: Use rwsem instead of mutex for board info	2009-06-19 16:58:20 +02:00
i2c-dev.c	i2c: Multiplexed I2C bus core support	2010-08-11 18:21:02 +02:00
i2c-mux.c	i2c: Multiplexed I2C bus core support	2010-08-11 18:21:02 +02:00
i2c-smbus.c	i2c: Remove all i2c_set_clientdata(client, NULL) in drivers	2010-06-03 11:33:58 +02:00
Kconfig	i2c: I2C bus multiplexer driver pca954x	2010-08-11 18:21:03 +02:00
Makefile	i2c: I2C bus multiplexer driver pca954x	2010-08-11 18:21:03 +02:00