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(parent: 8674cab) | patch
USB: serial: io_ti: document reason for drain delay
authorJohan Hovold <johan@kernel.org>
Mon, 12 Apr 2021 09:38:13 +0000 (11:38 +0200)
committerJohan Hovold <johan@kernel.org>
Tue, 13 Apr 2021 16:19:32 +0000 (18:19 +0200)
commit4b8e07951ff53e702bd5d6d21450b17152d124d7
treefc53ab84be2861b5f3e7dde4b593e23d43be43dctree | snapshot
parent8674cabe052b9ce23f72abb83058fc1d545e257acommit | diff
USB: serial: io_ti: document reason for drain delay

Document that the device line-status register doesn't tell when the
transmitter shift register has emptied and that this is why the
one-character drain delay is needed.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
drivers/usb/serial/io_ti.c diff | blob | history
Domain: System / Kernel;