usb: gadget: u_serial: use mutex for serialising open()s

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Remove home-made waiting mechanism from gs_open() and rely on
portmaster's mutex to do the job.

Note: This releases thread waiting on close() when another thread
open()s simultaneously.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

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Michał Mirosław 2019-08-10 10:42:53 +02:00 • committed by Felipe Balbi

parent ef9b457d0d

commit c6561082b8

1 changed files with 37 additions and 75 deletions

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drivers/usb/gadget/function/u_serial.c

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