Corey Minyard wrote:
Russell King wrote:
Use of an uninitialised variable. The reason we use check_modem_status
to return the current status here is because reading the MSR _clears_
interrupts. So, repeatedly calling get_mctrl via an ioctl is a great
way to introduce a hardware race condition if you just read the MSR and
never act on it.
"status" is used as a return variable; it is set by the call. I modified
check_modem_status() to return if it detected a change and set the
status if it was passed in.
Ok, I see what I missed. Never mind.
-corey
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