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From: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
	Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>,
	"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] usb: dwc3: qcom: Don't leave BCR asserted
Date: Wed, 18 Jun 2025 10:52:32 +0530	[thread overview]
Message-ID: <948e0112-1ba0-40b7-acd7-19fa9d93559c@oss.qualcomm.com> (raw)
In-Reply-To: <b8f5c24b-d9f2-4a3f-9dda-183dff203003@oss.qualcomm.com>



On 6/18/2025 2:58 AM, Konrad Dybcio wrote:
> On 6/6/25 2:11 AM, Thinh Nguyen wrote:
>> On Wed, Jun 04, 2025, Krishna Kurapati wrote:
>>> Leaving the USB BCR asserted prevents the associated GDSC to turn on. This
>>> blocks any subsequent attempts of probing the device, e.g. after a probe
>>> deferral, with the following showing in the log:
>>>
>>> [    1.332226] usb30_prim_gdsc status stuck at 'off'
>>>
>>> Leave the BCR deasserted when exiting the driver to avoid this issue.
>>>
>>> Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
>>
>> Is this a fix? Does this need to be backported to stable?
> 
> yes and "might as well" - this file was re-made last cycle and this
> patch won't apply without the recent
> 
> e33ebb133a24 ("usb: dwc3: qcom: Use bulk clock API and devres")
> 

I sent the patch on top of usb-next. Perhaps when I made this patch, the 
above mentioned patch was already present.

Thanks for the review. Will send a v2 with cc'ing stable and adding a 
fixes tag.

Regards,
Krishna,

> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> 
> Konrad

      reply	other threads:[~2025-06-18  5:22 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-04  6:00 Krishna Kurapati
2025-06-06  0:11 ` Thinh Nguyen
2025-06-17 21:28   ` Konrad Dybcio
2025-06-18  5:22     ` Krishna Kurapati [this message]

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