linux-kernel - Re: [-next] !irqd_can_balance() WARNINGs at irq_move_masked

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Message-ID: <20150620043234.GB365@swordfish>
Date:	Sat, 20 Jun 2015 13:32:34 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [-next] !irqd_can_balance() WARNINGs at irq_move_masked_irq()

On (06/20/15 00:47), Jiang Liu wrote:
[..]
> diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
> index 40cf79a55fe7..28a65d94fd89 100644
> --- a/arch/x86/kernel/hpet.c
> +++ b/arch/x86/kernel/hpet.c
> @@ -578,8 +578,11 @@ static void hpet_msi_capability_lookup(unsigned int
> start_timer)
>                         continue;
> 
>                 irq = hpet_assign_irq(hpet_domain, hdev, hdev->num);
> -               if (irq < 0)
> +               if (irq <= 0) {
> +                       pr_warn("irqdomain: fails to allocate irq for
> hpet%d\n",
> +                               hdev->num);
>                         continue;
> +               }
> 
>                 sprintf(hdev->name, "hpet%d", i);
>                 hdev->num = i;

dmesg attached.

---
[    0.288688] irqdomain: fails to allocate irq for hpet0
[    0.288755] irqdomain: fails to allocate irq for hpet0
[    0.288820] irqdomain: fails to allocate irq for hpet0
[    0.288885] irqdomain: fails to allocate irq for hpet0
---

	-ss

View attachment "dmesg-hpet_msi_capability_lookup" of type "text/plain" (49678 bytes)