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SubjectRe: [PATCH] kvm: i8254: remove redundant assignment to pointer s
Date
Colin King <colin.king@canonical.com> writes:

> From: Colin Ian King <colin.king@canonical.com>
>
> 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 <colin.king@canonical.com>

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 <vkuznets@redhat.com>

--
Vitaly

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