[openwrt/openwrt] kernel: ltq-vdsl-vr11: fix compilation waring

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f1a27441827fc2886a97b336fd7e78ded4b1ff7f

commit f1a27441827fc2886a97b336fd7e78ded4b1ff7f
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Thu May 11 05:48:57 2023 +0200

    kernel: ltq-vdsl-vr11: fix compilation waring
    
    Add patch fixing compilation warning from missing fallthrough
    Fix compilation warning:
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/common/drv_dsl_cpe_api.c: In function 'DSL_DRV_AutobootControlSet':
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/common/drv_dsl_cpe_api.c:2648:19: error: this statement may fall through [-Werror=implicit-fallthrough=]
     2648 |                if (pContext->bAutobootThreadStarted)
          |                   ^
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/common/drv_dsl_cpe_api.c:2656:13: note: here
     2656 |             case DSL_AUTOBOOT_CTRL_STOP_PD:
          |             ^~~~
    cc1: all warnings being treated as errors
    
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/pm/drv_dsl_cpe_pm_core.c: In function 'DSL_DRV_PM_CountersReset':
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/pm/drv_dsl_cpe_pm_core.c:2358:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
     2358 |    if (ResetType == DSL_PM_RESET_HISTORY)
          |       ^
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/pm/drv_dsl_cpe_pm_core.c:2361:4: note: here
     2361 |    case DSL_PM_RESET_TOTAL:
          |    ^~~~
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/pm/drv_dsl_cpe_pm_core.c:2365:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
     2365 |    if (ResetType == DSL_PM_RESET_TOTAL)
          |       ^
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/pm/drv_dsl_cpe_pm_core.c:2368:4: note: here
     2368 |    case DSL_PM_RESET_HISTORY_SHOWTIME:
          |    ^~~~
    cc1: all warnings being treated as errors
    
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/device/drv_dsl_cpe_device_vrx.c: In function 'DSL_DRV_DEV_AutobootHandleTraining':
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/device/drv_dsl_cpe_device_vrx.c:8883:19: error: this statement may fall through [-Werror=implicit-fallthrough=]
     8883 |          bPreFail = DSL_TRUE;
          |          ~~~~~~~~~^~~~~~~~~~
    /home/ansuel/openwrt-ansuel/openwrt/build_dir/target-arm-openwrt-linux-muslgnueabi_musl/linux-ipq40xx_generic/dsl_cpe_api-ugw_8.5.2.10/src/device/drv_dsl_cpe_device_vrx.c:8889:7: note: here
     8889 |       case DSL_LINESTATE_EXCEPTION:
          |       ^~~~
    cc1: all warnings being treated as errors
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 ...x-compilation-warning-missing-fallthrough.patch | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/package/kernel/lantiq/ltq-vdsl-vr11/patches/211-fix-compilation-warning-missing-fallthrough.patch b/package/kernel/lantiq/ltq-vdsl-vr11/patches/211-fix-compilation-warning-missing-fallthrough.patch
new file mode 100644
index 0000000000..96e1ffef97
--- /dev/null
+++ b/package/kernel/lantiq/ltq-vdsl-vr11/patches/211-fix-compilation-warning-missing-fallthrough.patch
@@ -0,0 +1,49 @@
+--- a/src/device/drv_dsl_cpe_device_vrx.c
++++ b/src/device/drv_dsl_cpe_device_vrx.c
+@@ -8885,6 +8885,9 @@ DSL_Error_t DSL_DRV_DEV_AutobootHandleTr
+             (pContext, SYS_DBG_MSG"DSL[%02d]: ORDERLY_SHUTDOWN state reached"
+             DSL_DRV_CRLF, DSL_DEV_NUM(pContext)));
+          /* do not use break here, continue handling */
++
++         fallthrough;
++
+ #endif /* INCLUDE_DSL_CPE_API_VRX */
+       case DSL_LINESTATE_EXCEPTION:
+          if (!bPreFail)
+--- a/src/pm/drv_dsl_cpe_pm_core.c
++++ b/src/pm/drv_dsl_cpe_pm_core.c
+@@ -2355,15 +2355,19 @@ DSL_Error_t DSL_DRV_PM_CountersReset(
+       }
+ #endif /* #ifdef INCLUDE_DSL_CPE_PM_HISTORY*/
+ 
+-   if (ResetType == DSL_PM_RESET_HISTORY)
+-      break;
++      if (ResetType == DSL_PM_RESET_HISTORY)
++         break;
++
++      fallthrough;
+ 
+    case DSL_PM_RESET_TOTAL:
+ #ifdef INCLUDE_DSL_CPE_PM_TOTAL_COUNTERS
+       memset(EpData.pRecTotal, nFillValue, EpData.nEpRecElementSize);
+ #endif /* #ifdef INCLUDE_DSL_CPE_PM_TOTAL_COUNTERS*/
+-   if (ResetType == DSL_PM_RESET_TOTAL)
+-      break;
++      if (ResetType == DSL_PM_RESET_TOTAL)
++         break;
++
++      fallthrough;
+ 
+    case DSL_PM_RESET_HISTORY_SHOWTIME:
+ #ifdef INCLUDE_DSL_CPE_PM_SHOWTIME_COUNTERS
+--- a/src/common/drv_dsl_cpe_api.c
++++ b/src/common/drv_dsl_cpe_api.c
+@@ -2652,6 +2652,8 @@ DSL_Error_t DSL_DRV_AutobootControlSet(
+                /* no break */
+                /* ... pass to restart*/
+ 
++               fallthrough;
++
+ #if defined (DSL_VRX_DEVICE_VR11)
+             case DSL_AUTOBOOT_CTRL_STOP_PD:
+ #endif