* Sfp PRESENT driver indication to user space
@ 2018-12-03 9:59 Roman Rozman
2018-12-03 13:48 ` Andrew Lunn
0 siblings, 1 reply; 2+ messages in thread
From: Roman Rozman @ 2018-12-03 9:59 UTC (permalink / raw)
To: linux-arm-kernel
Hi all,
Would like to ask what is the best way to receive an indication in
user space upon SFP module INSERT/PRESENT.
I can't read the GPIO value because it says resource is busy.
THanks,
Roman.
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* Re: Sfp PRESENT driver indication to user space
2018-12-03 9:59 Sfp PRESENT driver indication to user space Roman Rozman
@ 2018-12-03 13:48 ` Andrew Lunn
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Lunn @ 2018-12-03 13:48 UTC (permalink / raw)
To: Roman Rozman; +Cc: linux-arm-kernel
On Mon, Dec 03, 2018 at 11:59:21AM +0200, Roman Rozman wrote:
> Hi all,
>
> Would like to ask what is the best way to receive an indication in
> user space upon SFP module INSERT/PRESENT.
Hi Roman
The proper way to do this is via some sort of netlink notification,
for insert/remove. The SFP driver can send them in its state machine.
What are you interested in doing? Maybe there is a simpler way which
does not require adding new code.
Andrew
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