diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-09-28 13:42:17 +0300 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-11-03 10:38:22 +0200 |
| commit | abb621844f6a0c93bbc934f9a096752c4c1c5722 (patch) | |
| tree | 3d5d18a148ac146778b7c0f45cdaee27d667bc32 /include/uapi/linux/usb | |
| parent | 6ddcabc2aa40ea3c45a4e2c00ae7ed1a1d990121 (diff) | |
usb: ch9: make usb_endpoint_maxp() return only packet size
Now that we have a helper to gather periodic
endpoints' multiplier bits from wMaxPacketSize and
every driver is using it, we can safely make sure
that usb_endpoint_maxp() returns only bits 10:0 of
wMaxPacketSize which is where the actual packet size
lies.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'include/uapi/linux/usb')
| -rw-r--r-- | include/uapi/linux/usb/ch9.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h index 7628dff5fac3..2c5d7c4a69e3 100644 --- a/include/uapi/linux/usb/ch9.h +++ b/include/uapi/linux/usb/ch9.h @@ -423,6 +423,7 @@ struct usb_endpoint_descriptor { #define USB_ENDPOINT_XFER_INT 3 #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80 +#define USB_ENDPOINT_MAXP_MASK 0x07ff #define USB_EP_MAXP_MULT_SHIFT 11 #define USB_EP_MAXP_MULT_MASK (3 << USB_EP_MAXP_MULT_SHIFT) #define USB_EP_MAXP_MULT(m) \ @@ -628,11 +629,11 @@ static inline int usb_endpoint_is_isoc_out( * usb_endpoint_maxp - get endpoint's max packet size * @epd: endpoint to be checked * - * Returns @epd's max packet + * Returns @epd's max packet bits [10:0] */ static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd) { - return __le16_to_cpu(epd->wMaxPacketSize); + return __le16_to_cpu(epd->wMaxPacketSize) & USB_ENDPOINT_MAXP_MASK; } /** |