linux-kernel - Re: [PATCHv3 1/5] efi/runtime-wrappers: detect FW irq flag corruption

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Date:	Mon, 25 Apr 2016 15:15:57 +0100
From:	Matt Fleming <matt@...eblueprint.co.uk>
To:	Robin Murphy <robin.murphy@....com>
Cc:	Mark Rutland <mark.rutland@....com>, linux-efi@...r.kernel.org,
	linux@....linux.org.uk, ard.biesheuvel@...aro.org,
	catalin.marinas@....com, will.deacon@....com,
	linux-kernel@...r.kernel.org, leif.lindholm@...aro.org,
	mingo@...hat.com, hpa@...or.com, tglx@...utronix.de,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCHv3 1/5] efi/runtime-wrappers: detect FW irq flag corruption

On Mon, 25 Apr, at 03:12:01PM, Robin Murphy wrote:
> >+static void efi_call_virt_check_flags(unsigned long flags, const char *call)
> >+{
> >+	unsigned long cur_flags;
> >+	bool mismatch;
> >+
> >+	local_save_flags(cur_flags);
> >+
> >+	mismatch = !!((cur_flags ^ flags) & ARCH_EFI_IRQ_FLAGS_MASK);
> 
> nit: the assignment itself is already a conversion to bool, so the
> excitement is redundant here.

This was intentional. I asked Mark to make this change so that it's
explicit for the developer that we're performing the type conversion.