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usb: Simplify the parameter parsing of the legacy usb serial device 

Coverity complains about the current code, so let's get rid of
the now unneeded while loop and simply always emit "unrecognized
serial USB option" for all unsupported options.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1495177204-16808-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Thomas Huth 2017-05-19 09:00:04 +02:00 committed by Gerd Hoffmann
parent b813bed1ab
commit e14935df26
1 changed files with 5 additions and 16 deletions
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21
hw/usb/dev-serial.c
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@ -516,27 +516,16 @@ static USBDevice *usb_serial_init(USBBus *bus, const char *filename)
char label[32];
static int index;
while (*filename && *filename != ':') {
const char *p;
if (strstart(filename, "vendorid=", &p)) {
error_report("vendorid is not supported anymore");
return NULL;
} else if (strstart(filename, "productid=", &p)) {
error_report("productid is not supported anymore");
return NULL;
} else {
error_report("unrecognized serial USB option %s", filename);
return NULL;
}
while(*filename == ',')
filename++;
if (*filename == ':') {
filename++;
} else if (*filename) {
error_report("unrecognized serial USB option %s", filename);
return NULL;
}
if (!*filename) {
error_report("character device specification needed");
return NULL;
}
filename++;
snprintf(label, sizeof(label), "usbserial%d", index++);
cdrv = qemu_chr_new(label, filename);