Revert "Open chr device for all serial ports"
This reverts commit 55338f1dd4648d78ee130d83a92f1059ff1f3887.
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							@ -5688,17 +5688,15 @@ int main(int argc, char **argv, char **envp)
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    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
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        const char *devname = serial_devices[i];
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        char label[32];
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        snprintf(label, sizeof(label), "serial%d", i);
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        if (devname && strcmp(devname, "none")) {
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            char label[32];
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            snprintf(label, sizeof(label), "serial%d", i);
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            serial_hds[i] = qemu_chr_open(label, devname, NULL);
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        } else {
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            serial_hds[i] = qemu_chr_open(label, "null", NULL);
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        }
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        if (!serial_hds[i]) {
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            fprintf(stderr, "qemu: could not open serial device '%s'\n",
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                    devname);
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            exit(1);
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            if (!serial_hds[i]) {
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                fprintf(stderr, "qemu: could not open serial device '%s'\n",
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                        devname);
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                exit(1);
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            }
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        }
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    }
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