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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>
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1 changed files with 3 additions and 2 deletions
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@ -423,6 +423,7 @@ struct usb_endpoint_descriptor {
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#define USB_ENDPOINT_XFER_INT 3
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#define USB_ENDPOINT_MAX_ADJUSTABLE 0x80
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#define USB_ENDPOINT_MAXP_MASK 0x07ff
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#define USB_EP_MAXP_MULT_SHIFT 11
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#define USB_EP_MAXP_MULT_MASK (3 << USB_EP_MAXP_MULT_SHIFT)
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#define USB_EP_MAXP_MULT(m) \
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@ -628,11 +629,11 @@ static inline int usb_endpoint_is_isoc_out(
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* usb_endpoint_maxp - get endpoint's max packet size
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* @epd: endpoint to be checked
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*
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* Returns @epd's max packet
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* Returns @epd's max packet bits [10:0]
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*/
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static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
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{
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return __le16_to_cpu(epd->wMaxPacketSize);
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return __le16_to_cpu(epd->wMaxPacketSize) & USB_ENDPOINT_MAXP_MASK;
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}
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/**
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