[PATCH-for-5.0 v2 08/11] hw/timer/exynos4210_mct: Remove dead assignments

Philippe Mathieu-Daudé posted 11 patches 5 years, 10 months ago
Maintainers: John Snow <jsnow@redhat.com>, Joel Stanley <joel@jms.id.au>, Andrzej Zaborowski <balrogg@gmail.com>, BALATON Zoltan <balaton@eik.bme.hu>, Markus Armbruster <armbru@redhat.com>, Fam Zheng <fam@euphon.net>, David Gibson <david@gibson.dropbear.id.au>, Alistair Francis <alistair@alistair23.me>, "Michael S. Tsirkin" <mst@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Max Reitz <mreitz@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, Igor Mitsyanko <i.mitsyanko@gmail.com>, Andrew Jeffery <andrew@aj.id.au>, "Cédric Le Goater" <clg@kaod.org>, Kevin Wolf <kwolf@redhat.com>, "Hervé Poussineau" <hpoussin@reactos.org>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
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[PATCH-for-5.0 v2 08/11] hw/timer/exynos4210_mct: Remove dead assignments
Posted by Philippe Mathieu-Daudé 5 years, 10 months ago
Fix warnings reported by Clang static code analyzer:

  hw/timer/exynos4210_mct.c:1370:9: warning: Value stored to 'index' is never read
        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
        ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  hw/timer/exynos4210_mct.c:1399:9: warning: Value stored to 'index' is never read
        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
        ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  hw/timer/exynos4210_mct.c:1441:9: warning: Value stored to 'index' is never read
        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
        ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/timer/exynos4210_mct.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/hw/timer/exynos4210_mct.c b/hw/timer/exynos4210_mct.c
index 944120aea5..c0a25e71ec 100644
--- a/hw/timer/exynos4210_mct.c
+++ b/hw/timer/exynos4210_mct.c
@@ -1367,7 +1367,6 @@ static void exynos4210_mct_write(void *opaque, hwaddr offset,
 
     case L0_TCNTB: case L1_TCNTB:
         lt_i = GET_L_TIMER_IDX(offset);
-        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
 
         /*
          * TCNTB is updated to internal register only after CNT expired.
@@ -1396,7 +1395,6 @@ static void exynos4210_mct_write(void *opaque, hwaddr offset,
 
     case L0_ICNTB: case L1_ICNTB:
         lt_i = GET_L_TIMER_IDX(offset);
-        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
 
         s->l_timer[lt_i].reg.wstat |= L_WSTAT_ICNTB_WRITE;
         s->l_timer[lt_i].reg.cnt[L_REG_CNT_ICNTB] = value &
@@ -1438,7 +1436,6 @@ static void exynos4210_mct_write(void *opaque, hwaddr offset,
 
     case L0_FRCNTB: case L1_FRCNTB:
         lt_i = GET_L_TIMER_IDX(offset);
-        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
 
         DPRINTF("local timer[%d] FRCNTB write %llx\n", lt_i, value);
 
-- 
2.21.1


Re: [PATCH-for-5.0 v2 08/11] hw/timer/exynos4210_mct: Remove dead assignments
Posted by Alistair Francis 5 years, 10 months ago
On Sat, Mar 21, 2020 at 7:50 AM Philippe Mathieu-Daudé
<philmd@redhat.com> wrote:
>
> Fix warnings reported by Clang static code analyzer:
>
>   hw/timer/exynos4210_mct.c:1370:9: warning: Value stored to 'index' is never read
>         index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
>         ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>   hw/timer/exynos4210_mct.c:1399:9: warning: Value stored to 'index' is never read
>         index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
>         ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>   hw/timer/exynos4210_mct.c:1441:9: warning: Value stored to 'index' is never read
>         index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
>         ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Reported-by: Clang Static Analyzer
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  hw/timer/exynos4210_mct.c | 3 ---
>  1 file changed, 3 deletions(-)
>
> diff --git a/hw/timer/exynos4210_mct.c b/hw/timer/exynos4210_mct.c
> index 944120aea5..c0a25e71ec 100644
> --- a/hw/timer/exynos4210_mct.c
> +++ b/hw/timer/exynos4210_mct.c
> @@ -1367,7 +1367,6 @@ static void exynos4210_mct_write(void *opaque, hwaddr offset,
>
>      case L0_TCNTB: case L1_TCNTB:
>          lt_i = GET_L_TIMER_IDX(offset);
> -        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
>
>          /*
>           * TCNTB is updated to internal register only after CNT expired.
> @@ -1396,7 +1395,6 @@ static void exynos4210_mct_write(void *opaque, hwaddr offset,
>
>      case L0_ICNTB: case L1_ICNTB:
>          lt_i = GET_L_TIMER_IDX(offset);
> -        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
>
>          s->l_timer[lt_i].reg.wstat |= L_WSTAT_ICNTB_WRITE;
>          s->l_timer[lt_i].reg.cnt[L_REG_CNT_ICNTB] = value &
> @@ -1438,7 +1436,6 @@ static void exynos4210_mct_write(void *opaque, hwaddr offset,
>
>      case L0_FRCNTB: case L1_FRCNTB:
>          lt_i = GET_L_TIMER_IDX(offset);
> -        index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
>
>          DPRINTF("local timer[%d] FRCNTB write %llx\n", lt_i, value);
>
> --
> 2.21.1
>
>