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Date:   Fri, 8 Jan 2021 15:43:56 +0000
From:   John Garry <>
To:     Greg KH <>
CC:     <>, <>, <>,
        <>, <>
Subject: Re: [PATCH] Driver core: platform: Add extra error check in

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
>> 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 <>
>> Signed-off-by: John Garry <>
>> ---
>> 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:

I hope it doesn't cause hassle.


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