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[91.219.240.2]) by smtp.gmail.com with ESMTPSA id ok21sm14043099ejb.82.2020.06.10.01.32.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jun 2020 01:32:56 -0700 (PDT) From: Vitaly Kuznetsov To: Colin King Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Paolo Bonzini , Sean Christopherson , Wanpeng Li , Jim Mattson , Joerg Roedel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H . Peter Anvin" , kvm@vger.kernel.org Subject: Re: [PATCH] kvm: i8254: remove redundant assignment to pointer s In-Reply-To: <20200609233121.1118683-1-colin.king@canonical.com> References: <20200609233121.1118683-1-colin.king@canonical.com> Date: Wed, 10 Jun 2020 10:32:55 +0200 Message-ID: <875zbzb9s8.fsf@vitty.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Colin King writes: > From: Colin Ian King > > The pointer s is being assigned a value that is never read, the > assignment is redundant and can be removed. > > Addresses-Coverity: ("Unused value") > Signed-off-by: Colin Ian King It seems it wasn't used since the very beginning, Fixes: 7837699fa6d7 ("KVM: In kernel PIT model") QEMU code (from where KVM's implementation originates), however, does make use of 's' here as it open codes pit_latch_status(). > --- > arch/x86/kvm/i8254.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c > index febca334c320..a6e218c6140d 100644 > --- a/arch/x86/kvm/i8254.c > +++ b/arch/x86/kvm/i8254.c > @@ -462,7 +462,6 @@ static int pit_ioport_write(struct kvm_vcpu *vcpu, > if (channel == 3) { > /* Read-Back Command. */ > for (channel = 0; channel < 3; channel++) { > - s = &pit_state->channels[channel]; > if (val & (2 << channel)) { > if (!(val & 0x20)) > pit_latch_count(pit, channel); Reviewed-by: Vitaly Kuznetsov -- Vitaly