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This is based on the code for kernel 4.9, but a lot of 4.9 patches are backports from more recent kernel version and can be removed now. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
27 lines
931 B
Diff
27 lines
931 B
Diff
From fce20ac5d8c98f1a8ea5298051d9fa669e455f04 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Tue, 4 Aug 2015 23:22:45 +0200
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Subject: [PATCH] musb: sunxi: Ignore VBus errors in host-only mode
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For some unclear reason sometimes we get VBus errors in host-only mode,
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even though we do not have any vbus-detection then. Ignore these.
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/usb/musb/sunxi.c | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/usb/musb/sunxi.c
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+++ b/drivers/usb/musb/sunxi.c
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@@ -192,6 +192,10 @@ static irqreturn_t sunxi_musb_interrupt(
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musb_writeb(musb->mregs, MUSB_FADDR, 0);
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}
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+ /* Ignore Vbus errors when in host only mode */
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+ if (musb->port_mode == MUSB_PORT_MODE_HOST)
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+ musb->int_usb &= ~MUSB_INTR_VBUSERROR;
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+
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musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);
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if (musb->int_tx)
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writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);
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