i2c: Prevent priority inversion on top of bus lock

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Low priority thread holding the i2c bus mutex could block higher
priority threads to access the bus resulting in unacceptable
latencies. Change the mutex type to rt_mutex preventing priority
inversion.

Tested-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@nokia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

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Mika Kuoppala 2009-12-06 17:06:22 +01:00 • committed by Jean Delvare

parent a0c11cdd6a

commit 194684e596

3 changed files with 10 additions and 10 deletions

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1

drivers/i2c/Kconfig

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12

drivers/i2c/i2c-core.c

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