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o kernel bug (?): TIOCMIWAIT ioctl may wait on a port that is shutdown
by serial driver. A fix suggested for now (serial.c):
@@ -1074,6 +1088,7 @@
#endif
save_flags(flags); cli(); /* Disable interrupts */
+ wake_up_interruptible(&info->delta_msr_wait);
/*
* First unlink the serial port from the IRQ chain..
@@ -2000,6 +2015,8 @@
cli();
cnow = info->icount; /* atomic copy */
sti();
+ if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+ return -EIO;
if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
o New command:
dialer phone-number #times [modem-dev]
Account for local PTT differences as much as possible (possible?).
o Allow specification of day-of-week & time ranges for each rule;
eg: 035;1000-1230,2300-0000
o Identify call waiting if phone is busy (if it is data/fax-busy call
waiting should be normally disabled - so no way to identify).
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