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usb: dwc3: gadget: Enable suspend events

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commit d1d90dd272 upstream.

commit 72704f876f ("dwc3: gadget: Implement the suspend entry event
handler") introduced (nearly 5 years ago!) an interrupt handler for
U3/L1-L2 suspend events.  The problem is that these events aren't
currently enabled in the DEVTEN register so the handler is never
even invoked.  Fix this simply by enabling the corresponding bit
in dwc3_gadget_enable_irq() using the same revision check as found
in the handler.

Fixes: 72704f876f ("dwc3: gadget: Implement the suspend entry event handler")
Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210428090111.3370-1-jackp@codeaurora.org
[jackp@codeaurora.org: backport to pre-5.7 by replacing
 DWC3_IS_VER_PRIOR check with direct comparison of dwc->revision]
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jack Pham
2021-04-28 02:01:10 -07:00
committed by Greg Kroah-Hartman
parent b8a9a6df60
commit e8fbd40aa4
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc3/gadget.c
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@@ -1834,6 +1834,10 @@ static void dwc3_gadget_enable_irq(struct dwc3 *dwc)
if (dwc->revision < DWC3_REVISION_250A)
reg |= DWC3_DEVTEN_ULSTCNGEN;
/* On 2.30a and above this bit enables U3/L2-L1 Suspend Events */
if (dwc->revision >= DWC3_REVISION_230A)
reg |= DWC3_DEVTEN_EOPFEN;
dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);
}