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

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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
View file

@ -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);