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Date:   Mon, 16 Mar 2020 16:32:02 +0100
From:   Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To:     afzal mohammed <afzal.mohd.ma@gmail.com>
Cc:     Nathan Chancellor <natechancellor@gmail.com>,
        linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        Ralf Baechle <ralf@linux-mips.org>,
        Paul Burton <paulburton@kernel.org>,
        Florian Fainelli <f.fainelli@gmail.com>,
        bcm-kernel-feedback-list@broadcom.com,
        "Maciej W. Rozycki" <macro@linux-mips.org>,
        Jiaxun Yang <jiaxun.yang@flygoat.com>,
        Keguang Zhang <keguang.zhang@gmail.com>,
        Huacai Chen <chenhc@lemote.com>,
        John Crispin <john@phrozen.org>
Subject: Re: [PATCH v2] MIPS: pass non-NULL dev_id on shared request_irq()
Message-ID: <20200316153202.GB13674@alpha.franken.de>
References: <20200304203144.GA4323@alpha.franken.de>
 <20200305115759.3186-1-afzal.mohd.ma@gmail.com>
 <20200311053126.GA48442@ubuntu-m2-xlarge-x86>
 <20200311090308.GA5060@afzalpc>
 <20200311104217.GA10615@alpha.franken.de>
 <20200311131210.GA5115@afzalpc>
 <20200311160307.GA15464@alpha.franken.de>
 <20200311163249.GA4984@afzalpc>
 <20200313121138.GA5985@afzalpc>
 <20200314081312.GA4948@afzalpc>
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On Sat, Mar 14, 2020 at 01:43:12PM +0530, afzal mohammed wrote:
> Recently all usages of setup_irq() was replaced by request_irq().
> request_irq() does a few sanity checks that were not done in
> setup_irq(), if they fail irq registration will fail. One of the check
> is to ensure that non-NULL dev_id is passed in the case of shared irq.
> This caused malta on qemu to hang.
> 
> Fix it by passing handler as dev_id to all request_irq()'s that are
> shared. For sni, instead of passing non-NULL dev_id, remove shared irq
> flags.
> 
> Fixes: ac8fd122e070 ("MIPS: Replace setup_irq() by request_irq()")
> Reported-by: Nathan Chancellor <natechancellor@gmail.com>
> Suggested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>

thank you, applied to mips-next.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]