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SubjectRe: [PATCH] Driver core: platform: Add extra error check in devm_platform_get_irqs_affinity()
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On 08/01/2021 15:43, Greg KH wrote:
> On Mon, Dec 21, 2020 at 10:30:55PM +0800, John Garry wrote:
>> The current check of nvec < minvec for nvec returned from
>> platform_irq_count() will not detect a negative error code in nvec.
>>
>> This is because minvec is unsigned, and, as such, nvec is promoted to
>> unsigned in that check, which will make it a huge number (if it contained
>> -EPROBE_DEFER).
>>
>> In practice, an error should not occur in nvec for the only in-tree
>> user, but add a check anyway.
>>
>> Fixes: e15f2fa959f2 ("driver core: platform: Add devm_platform_get_irqs_affinity()")
>> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
>> Signed-off-by: John Garry <john.garry@huawei.com>
>> ---
>> I hope that this can go through either irqchip or driver/core trees, thanks!
>
> I'll take it, thanks.
>

Hi Greg,

I think that Marc already has taken it:

https://lore.kernel.org/lkml/X%2Fh9vy%2F1h0E1hyN0@kroah.com/T/#m95ef1736dbbd801cd85a4144c8f13c2afe33bc2c

I hope it doesn't cause hassle.

Thanks,
John

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