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Date:   Mon, 4 Mar 2019 10:03:27 +0100
From:   Marek Szyprowski <>
To:     Greg Kroah-Hartman <>,
        "He, Bo" <>
Cc:     "" <>,
        "" <>,
        "Wang, Yu Y" <>,
        Felipe Balbi <>,
        Sasha Levin <>
Subject: Re: [PATCH 4.20 12/88] usb: dwc3: gadget: synchronize_irq dwc irq
 in suspend

Hi Greg,

On 2019-03-04 09:53, Greg Kroah-Hartman wrote:
> On Mon, Mar 04, 2019 at 08:46:30AM +0000, He, Bo wrote:
>> Hi, Greg:
>> 	Marek Szyprowski report the patch has issue that calling synchronize_irq() under dwc->lock spinlock, he has upload the below patch for the issue:
>> dwc3_gadget_suspend() is called under dwc->lock spinlock. In such context calling synchronize_irq() is not allowed. Move the problematic call out of the protected block to fix the following kernel BUG during system
> <snip>
> Is this patch in Linus's tree yet?  If so, what is the git commit id?
> If not, is this also an issue in 5.0?

The fix has not been merged yet. The issue is also present in v5.0.

Best regards
Marek Szyprowski, PhD
Samsung R&D Institute Poland

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