From: "Peter E. Berger" <pberger@xxxxxxxxxxx>
I found that when using newer Edgeport devices such as the EP/416,
idle ports are regularly bounced (disconnected and then reconnected).
I discussed this with the manufacturer (Digi International) and learned
that newer Edgeport devices now ship from the factory running firmware
that requires periodic heartbeat messages from the driver, so I enclose
a proposed patch which implements their suggested mechanism (which works
both with old and new Edgeport devices).
While developing my heartbeat patch, I discovered that the firmware
download code was not working properly, so I include a second proposed
patch to fix this.
I welcome any comments or suggestions.
Thanks.
--Peter
Changes since v1 [1]
Addressing Oliver's review comments. Thanks Oliver!
* Patch 1: "USB: io_ti: Add heartbeat to keep idle Edgeport ports from disconnecting"
* Added suspend/resume support to prevent heartbeat code race.
* Patch 2: "USB: io_ti: Fix Edgeport firmware download code"
* Use endianness conversion macro.
[1]: v1: http://marc.info/?l=linux-usb&m=143085048801072&w=2
Peter E. Berger (2):
USB: io_ti: Add heartbeat to keep idle Edgeport ports from
disconnecting
USB: io_ti: Fix Edgeport firmware download code
drivers/usb/serial/io_ti.c | 134 ++++++++++++++++++++++++++++++++++++++-------
1 file changed, 115 insertions(+), 19 deletions(-)
--
1.8.3.1
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