serial/pty: Don't initialize pd_iflag to ISIG
since ISIG belong local mode flags not input mode flags, but local mode isn't implemented by pty driver yet. Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
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@ -1087,7 +1087,6 @@ int pty_register(int minor)
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devpair->pp_master.pd_master = true;
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devpair->pp_slave.pd_devpair = devpair;
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#ifdef CONFIG_SERIAL_TERMIOS
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devpair->pp_slave.pd_iflag = ISIG;
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devpair->pp_slave.pd_oflag = OPOST | ONLCR;
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#endif
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