linux-kernel - Re: [PATCH] usb: host: ehci-tegra: Fix error handling integra_ehci

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Date:   Tue, 27 Oct 2020 09:12:39 +0800
From:   Tang Bin <tangbin@...s.chinamobile.com>
To:     Alan Stern <stern@...land.harvard.edu>
Cc:     gregkh@...uxfoundation.org, thierry.reding@...il.com,
        jonathanh@...dia.com, linux-usb@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: host: ehci-tegra: Fix error handling
 integra_ehci_probe()

在 2020/10/26 23:05, Alan Stern 写道:
> On Mon, Oct 26, 2020 at 05:06:57PM +0800, Tang Bin wrote:
>> If the function platform_get_irq() failed, the negative value
>> returned will not be detected here. So fix error handling in
>> tegra_ehci_probe().
>>
>> Fixes: 79ad3b5add4a ("usb: host: Add EHCI driver for NVIDIA Tegra SoCs")
>> Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
>> ---
>>   drivers/usb/host/ehci-tegra.c | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
>> index 75a075daf..7b0efaf15 100644
>> --- a/drivers/usb/host/ehci-tegra.c
>> +++ b/drivers/usb/host/ehci-tegra.c
>> @@ -479,9 +479,9 @@ static int tegra_ehci_probe(struct platform_device *pdev)
>>   	u_phy->otg->host = hcd_to_bus(hcd);
>>   
>>   	irq = platform_get_irq(pdev, 0);
>> -	if (!irq) {
>> -		err = -ENODEV;
>> -		goto cleanup_phy;
>> +	if (irq < 0) {
>> +		err = irq;
>> +		goto cleanup_phy;
>>   	}
>>   
>>   	otg_set_host(u_phy->otg, &hcd->self);
> Acked-by: Alan Stern <stern@...land.harvard.edu>
>
> The "if (!irq)" statement occurs at least one other driver in this
> directory.  Would you like to submit a patch for ehci-xilinx-of.c as
> well?

OK, I will check this file out. Thanks!

Tang Bin