V4L/DVB (6633): xc2028: make register reads atomic

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Issuing register reads as a separate address write and data read transactions
means that other I2C activity could occur in between and state could get out
of sync.  Issue both the write and read in a single transaction so that the
i2c layer can prevent other users accessing the bus until we are complete.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

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Chris Pascoe 2007-11-19 04:31:58 -03:00 • committed by Mauro Carvalho Chehab

parent e155d908f7

commit 7d58d1117e

2 changed files with 43 additions and 25 deletions

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13

drivers/media/video/tuner-i2c.h

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55

drivers/media/video/tuner-xc2028.c

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