linux-kernel - Re: [PATCH] iio: adc: ad7768-1: Fix the right interrupt interfacecalls

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Message-ID: <5dd97e8f-8a52-c79c-2b00-7e6b807990ed@cmss.chinamobile.com>
Date:   Wed, 12 May 2021 16:39:42 +0800
From:   tangbin <tangbin@...s.chinamobile.com>
To:     Lars-Peter Clausen <lars@...afoo.de>
Cc:     Michael.Hennerich@...log.com, jic23@...nel.org, knaack.h@....de,
        pmeerw@...erw.net, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: adc: ad7768-1: Fix the right interrupt
 interfacecalls

Hi Lars-Peter:

         Thanks for you reply!

> Hi,
>
> Thanks for the patch. Aren't those two expressions equivalent? Are you 
> seeing an issue with the current code? If so can you include that in 
> the commit message?
>
> - Lars
>
>
        When submitting this patch, I actually thought about it for a 
while, but finally decided to submit it, my reason is as follows:

         In numerical data of address, &ad7768_interrupt is equal to 
ad7768_interrupt, and the compilation can pass. But I think they are not 
the same, ad7768_interrupt is the first

address of the function, and its type is irqreturn_t, &ad7768_interrupt 
represents the address of an object that points to the function 
ad7768_interrupt().

         So I think they are not the same, For previous experience with 
devm_request_irq(), I send this patch. If I'm wrong, I'm sorry to bother 
you.

Thanks

Tang Bin