usb: gadget: f_ncm: Fix NTP-32 support

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When connecting a CDC-NCM gadget to an host that uses the NTP-32 mode,
or that relies on the default CRC setting, the current implementation gets
confused, and does not expect the correct signature for its packets.

Fix this, by ensuring that the ndp_sign member in the f_ncm structure
always contain a valid value.

Signed-off-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

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Romain Izard 2019-04-16 16:07:31 +02:00 • committed by Felipe Balbi

parent 60722c4eef

commit 550eef0c35

1 changed files with 3 additions and 7 deletions

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drivers/usb/gadget/function/f_ncm.c

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