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Commit 6d76c92c authored by Marek Vasut's avatar Marek Vasut Committed by Felipe Balbi
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usb: dwc2: gadget: Repair DSTS register decoding 



The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 60c0288c

drivers/usb/dwc2/gadget.c

+1 −1
Original line number Diff line number Diff line
@@ -2095,7 +2095,7 @@ static void dwc2_hsotg_irq_enumdone(struct dwc2_hsotg *hsotg) 
	 */



	/* catch both EnumSpd_FS and EnumSpd_FS48 */

	switch (dsts & DSTS_ENUMSPD_MASK) {

	switch ((dsts & DSTS_ENUMSPD_MASK) >> DSTS_ENUMSPD_SHIFT) {

	case DSTS_ENUMSPD_FS:

	case DSTS_ENUMSPD_FS48:

		hsotg->gadget.speed = USB_SPEED_FULL;