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Subject: Re: [PATCH v1] usb: xhci: tegra: Check padctrl interrupt presence in
 device tree
To:     =?UTF-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= <mirq-linux@rere.qmqm.pl>
Cc:     Thierry Reding <treding@nvidia.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Mathias Nyman <mathias.nyman@intel.com>,
        JC Kuo <jckuo@nvidia.com>, Nicolas Chauvet <kwizart@gmail.com>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-tegra@vger.kernel.org
References: <20211021115501.14932-1-digetx@gmail.com>
 <YXHdoFAgGlxoI0Jx@qmqm.qmqm.pl>
From:   Dmitry Osipenko <digetx@gmail.com>
Message-ID: <29b38423-631e-192e-b006-aa0d258c8030@gmail.com>
Date:   Fri, 22 Oct 2021 00:46:23 +0300
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22.10.2021 00:37, Michał Mirosław пишет:
> On Thu, Oct 21, 2021 at 02:55:01PM +0300, Dmitry Osipenko wrote:
>> Older device-trees don't specify padctrl interrupt and xhci-tegra driver
>> now fails to probe with -EINVAL using those device-trees. Check interrupt
>> presence and disallow runtime PM suspension if it's missing to fix the
>> trouble.
> [...]
>> --- a/drivers/usb/host/xhci-tegra.c
>> +++ b/drivers/usb/host/xhci-tegra.c
>> @@ -1454,10 +1454,13 @@ static int tegra_xusb_probe(struct platform_device *pdev)
>>  		goto put_padctl;
>>  	}
>>  
>> -	tegra->padctl_irq = of_irq_get(np, 0);
>> -	if (tegra->padctl_irq <= 0) {
>> -		err = (tegra->padctl_irq == 0) ? -ENODEV : tegra->padctl_irq;
>> -		goto put_padctl;
>> +	/* Older device-trees don't specify padctrl interrupt */
>> +	if (of_property_read_bool(np, "interrupts")) {
> 
> Does this catch "interrupts-extended"?

No, Tegra doesn't use interrupts-extended.