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Johan Hovold 210b508e45 greybus: connection: serialise connection creation Serialise connection creation against concurrent creation and destruction using a global mutex. This is needed to prevent two drivers from attempting to create a connection to the same interface CPort and to cope with a racing connection destroy when moving to driver managed connections. Note that the locking can not (easily) be made more fine-grained as not all connections have an interface, but these are not hot paths anyway. Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>	History 2016-01-19 12:17:13 -08:00
drivers/staging/greybus	greybus: connection: serialise connection creation	2016-01-19 12:17:13 -08:00

Johan Hovold 210b508e45 greybus: connection: serialise connection creation

Serialise connection creation against concurrent creation and
destruction using a global mutex.

This is needed to prevent two drivers from attempting to create a
connection to the same interface CPort and to cope with a racing
connection destroy when moving to driver managed connections.

Note that the locking can not (easily) be made more fine-grained as not
all connections have an interface, but these are not hot paths anyway.

Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

History

2016-01-19 12:17:13 -08:00

drivers/staging/greybus

greybus: connection: serialise connection creation

2016-01-19 12:17:13 -08:00