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tty: n_gsm: remove obsolete mknod doc example
The n_gsm driver handles registration of /dev/gsmttyX nodes, so there's no need to do mknod manually. Signed-off-by: Martin Hundebøll <martin@geanix.com> Link: https://lore.kernel.org/r/20190710192656.60381-1-martin@geanix.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -63,24 +63,14 @@ Major parts of the initialization program :
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daemon(0,0);
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pause();
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4. create the devices corresponding to the "virtual" serial ports (take care,
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each modem has its configuration and some DLC have dedicated functions,
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for example GPS), starting with minor 1 (DLC0 is reserved for the management
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of the mux)::
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MAJOR=`cat /proc/devices |grep gsmtty | awk '{print $1}`
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for i in `seq 1 4`; do
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mknod /dev/ttygsm$i c $MAJOR $i
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done
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5. use these devices as plain serial ports.
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4. use these devices as plain serial ports.
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for example, it's possible:
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- and to use gnokii to send / receive SMS on ttygsm1
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- to use ppp to establish a datalink on ttygsm2
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6. first close all virtual ports before closing the physical port.
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5. first close all virtual ports before closing the physical port.
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Note that after closing the physical port the modem is still in multiplexing
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mode. This may prevent a successful re-opening of the port later. To avoid
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