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usb/dev-mtp: Fix use of uninitialized values 

This fixes:

  hw/usb/dev-mtp.c:971:5: warning: 4th function call argument is an uninitialized value
      trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path,
                                           c->argv[1], c->argv[2]);
                                                       ^~~~~~~~~~
and:

  hw/usb/dev-mtp.c:981:12: warning: Assigned value is garbage or undefined
      offset = c->argv[1];
               ^ ~~~~~~~~~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180604151421.23385-3-f4bug@amsat.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2018-06-04 12:14:20 -03:00 committed by Gerd Hoffmann
parent bf78fb1c1b
commit 62713a2e50
1 changed files with 5 additions and 1 deletions
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6
hw/usb/dev-mtp.c
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@ -1017,12 +1017,16 @@ static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c,
static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c,
MTPObject *o)
{
MTPData *d = usb_mtp_data_alloc(c);
MTPData *d;
off_t offset;
if (c->argc <= 2) {
return NULL;
}
trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path,
c->argv[1], c->argv[2]);
d = usb_mtp_data_alloc(c);
d->fd = open(o->path, O_RDONLY);
if (d->fd == -1) {
usb_mtp_data_free(d);