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path: root/drivers/usb/core/config.c
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Diffstat (limited to 'drivers/usb/core/config.c')
-rw-r--r--drivers/usb/core/config.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 5eb1a87228b4..31ccdccd7a04 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -75,8 +75,6 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
* be the first thing immediately following the endpoint descriptor.
*/
desc = (struct usb_ss_ep_comp_descriptor *) buffer;
- buffer += desc->bLength;
- size -= desc->bLength;
if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP ||
size < USB_DT_SS_EP_COMP_SIZE) {
@@ -100,7 +98,8 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
ep->desc.wMaxPacketSize;
return;
}
-
+ buffer += desc->bLength;
+ size -= desc->bLength;
memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE);
/* Check the various values */
@@ -146,12 +145,6 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
ep->ss_ep_comp.bmAttributes = 2;
}
- /* Parse a possible SuperSpeedPlus isoc ep companion descriptor */
- if (usb_endpoint_xfer_isoc(&ep->desc) &&
- USB_SS_SSP_ISOC_COMP(desc->bmAttributes))
- usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
- ep, buffer, size);
-
if (usb_endpoint_xfer_isoc(&ep->desc))
max_tx = (desc->bMaxBurst + 1) *
(USB_SS_MULT(desc->bmAttributes)) *
@@ -171,6 +164,11 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
max_tx);
ep->ss_ep_comp.wBytesPerInterval = cpu_to_le16(max_tx);
}
+ /* Parse a possible SuperSpeedPlus isoc ep companion descriptor */
+ if (usb_endpoint_xfer_isoc(&ep->desc) &&
+ USB_SS_SSP_ISOC_COMP(desc->bmAttributes))
+ usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
+ ep, buffer, size);
}
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,