From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>,
Linux USB <linux-usb@vger.kernel.org>
Cc: Bo He <bo.he@intel.com>, Yu Wang <yu.y.wang@intel.com>,
'Linux Samsung SOC' <linux-samsung-soc@vger.kernel.org>
Subject: usb: dwc3: gadget: synchronize_irq dwc irq in suspend
Date: Mon, 28 Jan 2019 15:30:24 +0200 [thread overview]
Message-ID: <87bm40hpu7.fsf@linux.intel.com> (raw)
Hi,
Marek Szyprowski <m.szyprowski@samsung.com> writes:
> On 2019-01-14 09:30, Felipe Balbi wrote:
>> From: Bo He <bo.he@intel.com>
>>
>> We see dwc3 endpoint stopped by unwanted irq during
>> suspend resume test, which is caused dwc3 ep can't be started
>> with error "No Resource".
>>
>> Here, add synchronize_irq before suspend to sync the
>> pending IRQ handlers complete.
>>
>> Signed-off-by: Bo He <bo.he@intel.com>
>> Signed-off-by: Yu Wang <yu.y.wang@intel.com>
>> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
>
> This patch causes following kernel BUG on Samsung Exynos based platforms
> during system suspend/resume cycle:
are you calling ->suspend() from ->suspend_noirq() time? Are we not
allowed to call synchronize_irq() during ->suspend()?
next reply other threads:[~2019-01-28 13:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-28 13:30 Felipe Balbi [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-02-08 11:00 usb: dwc3: gadget: synchronize_irq dwc irq in suspend Marek Szyprowski
2019-01-30 8:11 Marek Szyprowski
2019-01-30 6:53 Felipe Balbi
2019-01-29 10:44 Felipe Balbi
2019-01-28 22:58 He, Bo
2019-01-28 14:53 Marek Szyprowski
2019-01-22 14:04 Marek Szyprowski
2019-01-14 8:30 Felipe Balbi
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