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| author |   James Morris <james.l.morris@oracle.com> | 2015-11-23 22:46:28 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2015-11-23 22:46:28 +1100 |
| commit | ebd68df3f24b318d391d15c458d6f43f340ba36a (patch) | |
| tree | f0277bc4b853abe5db1d30fa4e10b05bba7f2ac5 /drivers/net/usb/cdc-phonet.c | |
| parent | security/capability.h: cap_issubset/isclear can be boolean (diff) | |
| parent | Linux 4.4-rc2 (diff) | |
| download | linux-dev-ebd68df3f24b318d391d15c458d6f43f340ba36a.tar.xz linux-dev-ebd68df3f24b318d391d15c458d6f43f340ba36a.zip | |
Sync to Linus v4.4-rc2 for LSM developers.
Diffstat (limited to 'drivers/net/usb/cdc-phonet.c')
| -rw-r--r-- | drivers/net/usb/cdc-phonet.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/drivers/net/usb/cdc-phonet.c b/drivers/net/usb/cdc-phonet.c index 415ce8b882c6..ff2270ead2e6 100644 --- a/drivers/net/usb/cdc-phonet.c +++ b/drivers/net/usb/cdc-phonet.c @@ -340,32 +340,13 @@ static int usbpn_probe(struct usb_interface *intf, const struct usb_device_id *i u8 *data; int phonet = 0; int len, err; + struct usb_cdc_parsed_header hdr; data = intf->altsetting->extra; len = intf->altsetting->extralen; - while (len >= 3) { - u8 dlen = data[0]; - if (dlen < 3) - return -EINVAL; - - /* bDescriptorType */ - if (data[1] == USB_DT_CS_INTERFACE) { - /* bDescriptorSubType */ - switch (data[2]) { - case USB_CDC_UNION_TYPE: - if (union_header || dlen < 5) - break; - union_header = - (struct usb_cdc_union_desc *)data; - break; - case 0xAB: - phonet = 1; - break; - } - } - data += dlen; - len -= dlen; - } + cdc_parse_cdc_header(&hdr, intf, data, len); + union_header = hdr.usb_cdc_union_desc; + phonet = hdr.phonet_magic_present; if (!union_header || !phonet) return -EINVAL; |