platform/x86: acer-wmi: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/platform/x86/acer-wmi.c: In function ‘set_u32’:
drivers/platform/x86/acer-wmi.c:1378:33: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (cap == ACER_CAP_WIRELESS ||
                                 ^
drivers/platform/x86/acer-wmi.c:1386:3: note: here
   case ACER_WMID:
   ^~~~
drivers/platform/x86/acer-wmi.c:1393:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
    else if (wmi_has_guid(WMID_GUID2))
            ^
drivers/platform/x86/acer-wmi.c:1395:3: note: here
   default:
   ^~~~~~~
drivers/platform/x86/acer-wmi.c: In function ‘get_u32’:
drivers/platform/x86/acer-wmi.c:1340:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (cap == ACER_CAP_MAILLED) {
      ^
drivers/platform/x86/acer-wmi.c:1344:2: note: here
  case ACER_WMID:
  ^~~~
drivers/platform/x86/acer-wmi.c: In function ‘WMID_get_u32’:
drivers/platform/x86/acer-wmi.c:1013:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (quirks->mailled == 1) {
      ^
drivers/platform/x86/acer-wmi.c:1018:2: note: here
  default:
  ^~~~~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 5d0cfe837f2183b686c73c6f98f159a84fd14772..464cde582661f4eac9ec5580c13748c8e765405c 100644 (file)
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -1014,6 +1014,7 @@ static acpi_status WMID_get_u32(u32 *value, u32 cap)
                        *value = tmp & 0x1;
                        return 0;
                }
+               /* fall through */
        default:
                return AE_ERROR;
        }
@@ -1340,6 +1341,7 @@ static acpi_status get_u32(u32 *value, u32 cap)
                        status = AMW0_get_u32(value, cap);
                        break;
                }
+               /* fall through */
        case ACER_WMID:
                status = WMID_get_u32(value, cap);
                break;
@@ -1382,6 +1384,7 @@ static acpi_status set_u32(u32 value, u32 cap)
 
                                return AMW0_set_u32(value, cap);
                        }
+                       /* fall through */
                case ACER_WMID:
                        return WMID_set_u32(value, cap);
                case ACER_WMID_v2:
@@ -1391,6 +1394,7 @@ static acpi_status set_u32(u32 value, u32 cap)
                                return wmid_v2_set_u32(value, cap);
                        else if (wmi_has_guid(WMID_GUID2))
                                return WMID_set_u32(value, cap);
+                       /* fall through */
                default:
                        return AE_BAD_PARAMETER;
                }