linux-kernel - Re: [PATCH] mips: lantiq: fix irq_chip name to not land in new parent field

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Date:	Wed, 3 Aug 2016 09:31:37 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Ralf Baechle <ralf@...ux-mips.org>
CC:	<linux-kernel@...r.kernel.org>, Jon Hunter <jonathanh@...dia.com>,
	Kevin Hilman <khilman@...libre.com>,
	Marc Zyngier <marc.zyngier@....com>,
	John Crispin <john@...ozen.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	<linux-mips@...ux-mips.org>,
	Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
Subject: Re: [PATCH] mips: lantiq: fix irq_chip name to not land in new
 parent field

[Re: [PATCH] mips: lantiq: fix irq_chip name to not land in new parent field] On 03/08/2016 (Wed 07:56) Ralf Baechle wrote:

> On Tue, Aug 02, 2016 at 02:54:47PM -0400, Paul Gortmaker wrote:
> 
> > As of commit be45beb2df69 ("genirq: Add runtime power management
> > support for IRQ chips") the irq_chip struct got a struct *device
> > parent_device field added to it.  However, it was added at the
> > beginning of the struct, which previously was the "name" entry.
> > 
> > The driver here was using a mix of ordered struct init entries and
> > named init entries.  It was supplying the name assuming it was the 1st
> > in the order, and hence when that became a struct *device we get:
> > 
> > arch/mips/lantiq/irq.c:209:2: warning: initialization from incompatible pointer type [enabled by default]
> > arch/mips/lantiq/irq.c:209:2: warning: (near initialization for 'ltq_irq_type.parent_device') [enabled by default]
> > arch/mips/lantiq/irq.c:219:2: warning: initialization from incompatible pointer type [enabled by default]
> > arch/mips/lantiq/irq.c:219:2: warning: (near initialization for 'ltq_eiu_type.parent_device') [enabled by default]
> > 
> > While not runtime tested, I can't imagine trying to dereference a
> > a struct device field from a char string will end well.
> > 
> > Here we've used named element init entries for the name string as well
> > to fix it.
> > 
> > Fixes: be45beb2df69 ("genirq: Add runtime power management support for IRQ chips")
> > Cc: Jon Hunter <jonathanh@...dia.com>
> > Cc: Kevin Hilman <khilman@...libre.com>
> > Cc: Marc Zyngier <marc.zyngier@....com>
> > Cc: John Crispin <john@...ozen.org>
> > Cc: Ralf Baechle <ralf@...ux-mips.org>
> > Cc: Thomas Gleixner <tglx@...utronix.de>
> > Cc: linux-mips@...ux-mips.org
> > Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
> 
> Thanks for the patch but I've already applied the identical patch
> https://patchwork.linux-mips.org/patch/13684/.

Patchwork shows that patch was from June, however I still saw the issue
on the linux-next from yesterday (or maybe the weekend?).   Is the
branch you applied it to being fed into sfr's daily merge queue?

P.
--
> 
>   Ralf