diff mbox series

[v3,6/7] ppc: Add a missing break for PPC6xx_INPUT_TBEN

Message ID 20201116024810.2415819-7-kuhn.chenqun@huawei.com
State New
Headers show
Series silence the compiler warnings | expand

Commit Message

Chenqun (kuhn) Nov. 16, 2020, 2:48 a.m. UTC
When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
hw/ppc/ppc.c: In function ‘ppc6xx_set_irq’:
hw/ppc/ppc.c:118:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
  118 |             if (level) {
      |                ^
hw/ppc/ppc.c:123:9: note: here
  123 |         case PPC6xx_INPUT_INT:
      |         ^~~~

According to the discussion, a break statement needs to be added here.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v1->v2: Add a "break" statement here instead of /* fall through */ comments
(Base on Thomas's and David review).

Cc: Thomas Huth <thuth@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/ppc.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Philippe Mathieu-Daudé Nov. 16, 2020, 11:46 a.m. UTC | #1
David, can you queue this patch for 5.2 (bugfix)?

On 11/16/20 3:48 AM, Chen Qun wrote:
> When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
> hw/ppc/ppc.c: In function ‘ppc6xx_set_irq’:
> hw/ppc/ppc.c:118:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
>   118 |             if (level) {
>       |                ^
> hw/ppc/ppc.c:123:9: note: here
>   123 |         case PPC6xx_INPUT_INT:
>       |         ^~~~
> 
> According to the discussion, a break statement needs to be added here.
> 
> Reported-by: Euler Robot <euler.robot@huawei.com>
> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
> v1->v2: Add a "break" statement here instead of /* fall through */ comments
> (Base on Thomas's and David review).
> 
> Cc: Thomas Huth <thuth@redhat.com>
> Cc: David Gibson <david@gibson.dropbear.id.au>
> ---
>  hw/ppc/ppc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
> index 4a11fb1640..1b98272076 100644
> --- a/hw/ppc/ppc.c
> +++ b/hw/ppc/ppc.c
> @@ -120,6 +120,7 @@ static void ppc6xx_set_irq(void *opaque, int pin, int level)
>              } else {
>                  cpu_ppc_tb_stop(env);
>              }
> +            break;
>          case PPC6xx_INPUT_INT:
>              /* Level sensitive - active high */
>              LOG_IRQ("%s: set the external IRQ state to %d\n",
>
David Gibson Nov. 23, 2020, 5:46 a.m. UTC | #2
On Mon, Nov 16, 2020 at 12:46:32PM +0100, Philippe Mathieu-Daudé wrote:
> David, can you queue this patch for 5.2 (bugfix)?

Sorry about this, I've been on vacation.

Although it is a bugfix, it's been there for a very long time and
no-one's hit it in practice.

So, I'm disinclined to push it in this late in the 5.2 cycle.

> 
> On 11/16/20 3:48 AM, Chen Qun wrote:
> > When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
> > hw/ppc/ppc.c: In function ‘ppc6xx_set_irq’:
> > hw/ppc/ppc.c:118:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
> >   118 |             if (level) {
> >       |                ^
> > hw/ppc/ppc.c:123:9: note: here
> >   123 |         case PPC6xx_INPUT_INT:
> >       |         ^~~~
> > 
> > According to the discussion, a break statement needs to be added here.
> > 
> > Reported-by: Euler Robot <euler.robot@huawei.com>
> > Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
> > Reviewed-by: Thomas Huth <thuth@redhat.com>
> > Acked-by: David Gibson <david@gibson.dropbear.id.au>
> > ---
> > v1->v2: Add a "break" statement here instead of /* fall through */ comments
> > (Base on Thomas's and David review).
> > 
> > Cc: Thomas Huth <thuth@redhat.com>
> > Cc: David Gibson <david@gibson.dropbear.id.au>
> > ---
> >  hw/ppc/ppc.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
> > index 4a11fb1640..1b98272076 100644
> > --- a/hw/ppc/ppc.c
> > +++ b/hw/ppc/ppc.c
> > @@ -120,6 +120,7 @@ static void ppc6xx_set_irq(void *opaque, int pin, int level)
> >              } else {
> >                  cpu_ppc_tb_stop(env);
> >              }
> > +            break;
> >          case PPC6xx_INPUT_INT:
> >              /* Level sensitive - active high */
> >              LOG_IRQ("%s: set the external IRQ state to %d\n",
> > 
>
David Gibson Nov. 23, 2020, 5:46 a.m. UTC | #3
On Mon, Nov 16, 2020 at 10:48:09AM +0800, Chen Qun wrote:
> When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
> hw/ppc/ppc.c: In function ‘ppc6xx_set_irq’:
> hw/ppc/ppc.c:118:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
>   118 |             if (level) {
>       |                ^
> hw/ppc/ppc.c:123:9: note: here
>   123 |         case PPC6xx_INPUT_INT:
>       |         ^~~~
> 
> According to the discussion, a break statement needs to be added here.
> 
> Reported-by: Euler Robot <euler.robot@huawei.com>
> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>

Applied to ppc-for-6.0, thanks.

> ---
> v1->v2: Add a "break" statement here instead of /* fall through */ comments
> (Base on Thomas's and David review).
> 
> Cc: Thomas Huth <thuth@redhat.com>
> Cc: David Gibson <david@gibson.dropbear.id.au>
> ---
>  hw/ppc/ppc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
> index 4a11fb1640..1b98272076 100644
> --- a/hw/ppc/ppc.c
> +++ b/hw/ppc/ppc.c
> @@ -120,6 +120,7 @@ static void ppc6xx_set_irq(void *opaque, int pin, int level)
>              } else {
>                  cpu_ppc_tb_stop(env);
>              }
> +            break;
>          case PPC6xx_INPUT_INT:
>              /* Level sensitive - active high */
>              LOG_IRQ("%s: set the external IRQ state to %d\n",
diff mbox series

Patch

diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index 4a11fb1640..1b98272076 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -120,6 +120,7 @@  static void ppc6xx_set_irq(void *opaque, int pin, int level)
             } else {
                 cpu_ppc_tb_stop(env);
             }
+            break;
         case PPC6xx_INPUT_INT:
             /* Level sensitive - active high */
             LOG_IRQ("%s: set the external IRQ state to %d\n",