diff mbox series

PCI: Mark expected switch fall-through

Message ID 20190802012248.GA22622@embeddedor (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show
Series PCI: Mark expected switch fall-through | expand

Commit Message

Gustavo A. R. Silva Aug. 2, 2019, 1:22 a.m. UTC
Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: allmodconfig i386):

drivers/pci/hotplug/ibmphp_res.c: In function ‘update_bridge_ranges’:
drivers/pci/hotplug/ibmphp_res.c:1943:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
       function = 0x8;
       ~~~~~~~~~^~~~~
drivers/pci/hotplug/ibmphp_res.c:1944:6: note: here
      case PCI_HEADER_TYPE_MULTIBRIDGE:
      ^~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/pci/hotplug/ibmphp_res.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Kees Cook Aug. 2, 2019, 5:10 a.m. UTC | #1
On Thu, Aug 01, 2019 at 08:22:48PM -0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
> 
> This patch fixes the following warning (Building: allmodconfig i386):
> 
> drivers/pci/hotplug/ibmphp_res.c: In function ‘update_bridge_ranges’:
> drivers/pci/hotplug/ibmphp_res.c:1943:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
>        function = 0x8;
>        ~~~~~~~~~^~~~~
> drivers/pci/hotplug/ibmphp_res.c:1944:6: note: here
>       case PCI_HEADER_TYPE_MULTIBRIDGE:
>       ^~~~
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Reviewed-by: Kees Cook <keescook@chromium.org>

-Kees

> ---
>  drivers/pci/hotplug/ibmphp_res.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c
> index 5e8caf7a4452..1e1ba66cfd1e 100644
> --- a/drivers/pci/hotplug/ibmphp_res.c
> +++ b/drivers/pci/hotplug/ibmphp_res.c
> @@ -1941,6 +1941,7 @@ static int __init update_bridge_ranges(struct bus_node **bus)
>  						break;
>  					case PCI_HEADER_TYPE_BRIDGE:
>  						function = 0x8;
> +						/* Fall through */
>  					case PCI_HEADER_TYPE_MULTIBRIDGE:
>  						/* We assume here that only 1 bus behind the bridge
>  						   TO DO: add functionality for several:
> -- 
> 2.22.0
>
Bjorn Helgaas Aug. 2, 2019, 1:48 p.m. UTC | #2
On Thu, Aug 01, 2019 at 08:22:48PM -0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
> 
> This patch fixes the following warning (Building: allmodconfig i386):
> 
> drivers/pci/hotplug/ibmphp_res.c: In function ‘update_bridge_ranges’:
> drivers/pci/hotplug/ibmphp_res.c:1943:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
>        function = 0x8;
>        ~~~~~~~~~^~~~~
> drivers/pci/hotplug/ibmphp_res.c:1944:6: note: here
>       case PCI_HEADER_TYPE_MULTIBRIDGE:
>       ^~~~
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Applied with Kees' reviewed-by to pci/misc for v5.4, thanks, Gustavo!

> ---
>  drivers/pci/hotplug/ibmphp_res.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c
> index 5e8caf7a4452..1e1ba66cfd1e 100644
> --- a/drivers/pci/hotplug/ibmphp_res.c
> +++ b/drivers/pci/hotplug/ibmphp_res.c
> @@ -1941,6 +1941,7 @@ static int __init update_bridge_ranges(struct bus_node **bus)
>  						break;
>  					case PCI_HEADER_TYPE_BRIDGE:
>  						function = 0x8;
> +						/* Fall through */
>  					case PCI_HEADER_TYPE_MULTIBRIDGE:
>  						/* We assume here that only 1 bus behind the bridge
>  						   TO DO: add functionality for several:
> -- 
> 2.22.0
>
diff mbox series

Patch

diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c
index 5e8caf7a4452..1e1ba66cfd1e 100644
--- a/drivers/pci/hotplug/ibmphp_res.c
+++ b/drivers/pci/hotplug/ibmphp_res.c
@@ -1941,6 +1941,7 @@  static int __init update_bridge_ranges(struct bus_node **bus)
 						break;
 					case PCI_HEADER_TYPE_BRIDGE:
 						function = 0x8;
+						/* Fall through */
 					case PCI_HEADER_TYPE_MULTIBRIDGE:
 						/* We assume here that only 1 bus behind the bridge
 						   TO DO: add functionality for several: