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usb: dwc3: fix clock issue during resume in OTG mode

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commit 0e5a3c8284a30f4c43fd81d7285528ece74563b5 upstream.

Commit fe8abf332b ("usb: dwc3: support clocks and resets for DWC3
core") introduced clock support and a new function named
dwc3_core_init_for_resume() which enables the clock before calling
dwc3_core_init() during resume as clocks get disabled during suspend.

Unfortunately in this commit the DWC3_GCTL_PRTCAP_OTG case was forgotten
and therefore during resume, a platform could call dwc3_core_init()
without re-enabling the clocks first, preventing to resume properly.

So update the resume path to call dwc3_core_init_for_resume() as it
should.

Fixes: fe8abf332b ("usb: dwc3: support clocks and resets for DWC3 core")
Cc: stable@vger.kernel.org
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Link: https://lore.kernel.org/r/20210125161934.527820-1-gary.bisson@boundarydevices.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gary Bisson 2021-01-25 17:19:34 +01:00 • committed by Greg Kroah-Hartman
commit 1f9e9c1048
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc3/core.c
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@ -1718,7 +1718,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
if (PMSG_IS_AUTO(msg))
break;
ret = dwc3_core_init(dwc);
ret = dwc3_core_init_for_resume(dwc);
if (ret)
return ret;