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Date:   Fri, 8 Jan 2021 16:43:59 +0100
From:   Greg KH <>
To:     John Garry <>
Subject: Re: [PATCH] Driver core: platform: Add extra error check in

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.

greg k-h

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