Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754769AbcDYOQD (ORCPT ); Mon, 25 Apr 2016 10:16:03 -0400 Received: from mail-wm0-f41.google.com ([74.125.82.41]:35002 "EHLO mail-wm0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752857AbcDYOQA (ORCPT ); Mon, 25 Apr 2016 10:16:00 -0400 Date: Mon, 25 Apr 2016 15:15:57 +0100 From: Matt Fleming To: Robin Murphy Cc: Mark Rutland , linux-efi@vger.kernel.org, linux@arm.linux.org.uk, ard.biesheuvel@linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, leif.lindholm@linaro.org, mingo@redhat.com, hpa@zytor.com, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCHv3 1/5] efi/runtime-wrappers: detect FW irq flag corruption Message-ID: <20160425141557.GA2829@codeblueprint.co.uk> References: <1461591994-14918-1-git-send-email-mark.rutland@arm.com> <1461591994-14918-2-git-send-email-mark.rutland@arm.com> <571E25B1.8070305@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <571E25B1.8070305@arm.com> User-Agent: Mutt/1.5.24+41 (02bc14ed1569) (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 543 Lines: 15 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.