From: Gary Bisson <gary.bisson@boundarydevices.com>
To: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, balbi@kernel.org,
gregkh@linuxfoundation.org,
Gary Bisson <gary.bisson@boundarydevices.com>,
stable@vger.kernel.org
Subject: [PATCH] usb: dwc3: fix clock issue during resume in OTG mode
Date: Mon, 25 Jan 2021 17:19:34 +0100 [thread overview]
Message-ID: <20210125161934.527820-1-gary.bisson@boundarydevices.com> (raw)
Commit fe8abf332b8f ("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: fe8abf332b8f ("usb: dwc3: support clocks and resets for DWC3
core")
Cc: stable@vger.kernel.org
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
---
drivers/usb/dwc3/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 841daec70b6e..3101f0dcf6ae 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1758,7 +1758,7 @@ 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;
--
2.29.2
reply other threads:[~2021-01-25 16:21 UTC|newest]
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