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Xen: use qemu_strtoul instead of strtol 

No need to roll our own (with slightly incorrect handling of errno),
when we can use the common version.

Change signed parsing to unsigned, because what it read are values in
PCI config space, which are non-negative.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Cao jin 2016-01-17 20:13:11 +08:00 committed by Stefano Stabellini
parent 599d0c4561
commit f524bc3b3d
1 changed files with 4 additions and 8 deletions
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12
hw/xen/xen-host-pci-device.c
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@ -141,7 +141,7 @@ static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name,
char buf[XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE];
int fd, rc;
unsigned long value;
char *endptr;
const char *endptr;
xen_host_pci_sysfs_path(d, name, path, sizeof(path));
@ -158,13 +158,9 @@ static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name,
}
} while (rc < 0);
buf[rc] = 0;
value = strtol(buf, &endptr, base);
if (endptr == buf || *endptr != '\n') {
rc = -1;
} else if ((value == LONG_MIN || value == LONG_MAX) && errno == ERANGE) {
rc = -errno;
} else {
rc = 0;
rc = qemu_strtoul(buf, &endptr, base, &value);
if (!rc) {
assert(value <= UINT_MAX);
*pvalue = value;
}
out: