From f7697963e1b0fc1496709f84c00da5cb144a58a3 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 17 Dec 2015 23:42:35 +0100 Subject: [PATCH 02/33] 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. Signed-off-by: Marek Vasut Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: John Youn --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 0abf73c..48e47c1 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -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; -- 2.8.1