32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
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From 97311c8f8b6e26d5ba6508f0df430ad80fc59327 Mon Sep 17 00:00:00 2001
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From: Minas Harutyunyan <minas.harutyunyan@synopsys.com>
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Date: Thu, 31 Jan 2019 18:28:07 +0400
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Subject: [PATCH 25/53] usb: dwc2: Fix EP TxFIFO number setting
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In case when some EP IN is frequently reused, i.e. enabled/disabled by
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function driver. It is required to clear TxFIFO number field in DIEPCTL
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register before setting new number. Otherwise there is probability to
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have same TxFIFO number for different EP's because of OR operator.
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Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
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Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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---
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drivers/usb/dwc2/gadget.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
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index 55ef3cc2701b..e15d8a462085 100644
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--- a/drivers/usb/dwc2/gadget.c
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+++ b/drivers/usb/dwc2/gadget.c
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@@ -4005,6 +4005,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep,
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ret = -ENOMEM;
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goto error1;
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}
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+ epctrl &= ~(DXEPCTL_TXFNUM_LIMIT << DXEPCTL_TXFNUM_SHIFT);
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hsotg->fifo_map |= 1 << fifo_index;
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epctrl |= DXEPCTL_TXFNUM(fifo_index);
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hs_ep->fifo_index = fifo_index;
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--
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2.11.0
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