target/linux/sunxi/patches-4.14/115-musb-ignore-vbus-errors.patch

   1 From fce20ac5d8c98f1a8ea5298051d9fa669e455f04 Mon Sep 17 00:00:00 2001
   2 From: Hans de Goede <hdegoede@redhat.com>
   3 Date: Tue, 4 Aug 2015 23:22:45 +0200
   4 Subject: [PATCH] musb: sunxi: Ignore VBus errors in host-only mode
   5
   6 For some unclear reason sometimes we get VBus errors in host-only mode,
   7 even though we do not have any vbus-detection then. Ignore these.
   8
   9 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  10 ---
  11  drivers/usb/musb/sunxi.c | 4 ++++
  12  1 file changed, 4 insertions(+)
  13
  14 --- a/drivers/usb/musb/sunxi.c
  15 +++ b/drivers/usb/musb/sunxi.c
  16 @@ -192,6 +192,10 @@ static irqreturn_t sunxi_musb_interrupt(
  17                 musb_writeb(musb->mregs, MUSB_FADDR, 0);
  18         }
  19
  20 +       /*  Ignore Vbus errors when in host only mode */
  21 +       if (musb->port_mode == MUSB_PORT_MODE_HOST)
  22 +               musb->int_usb &= ~MUSB_INTR_VBUSERROR;
  23 +
  24         musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);
  25         if (musb->int_tx)
  26                 writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);