kernel: ltq-tapi: add patch fixing compilation warning

Add patch fixing compilation warning for switch fallthrough and
copy_to_user ret not handled.
Fix compilation warning:
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_dial.c: In function 'ifx_tapi_dial_OnTimer':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_dial.c:318:38: error: this statement may fall through [-Werror=implicit-fallthrough=]
  318 |          pTapiDialData->nHookChanges = 0;
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_dial.c:322:7: note: here
  322 |       case TAPI_HOOK_STATE_DIAL_L_VAL:
      |       ^~~~
cc1: all warnings being treated as errors

/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_event.c: In function 'IFX_TAPI_Event_Dispatch_ProcessCtx':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_event.c:1546:30: error: this statement may fall through [-Werror=implicit-fallthrough=]
 1546 |                   pEvent->ch = IFX_TAPI_DEVICE_CH_NUMBER;
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_event.c:1548:16: note: here
 1548 |                case  IFX_TAPI_ERRSRC_LL_CH:
      |                ^~~~
cc1: all warnings being treated as errors

/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_ioctl.c: In function 'TAPI_IoctlDev':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_ioctl.c:705:19: error: ignoring return value of 'copy_to_user' declared with attribute 'warn_unused_result' [-Werror=unused-result]
  705 |                   copy_to_user ((IFX_void_t*)ioarg, p_tmp, sizeof(IFX_TAPI_CAP_t));
      |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_ioctl.c: In function 'TAPI_IoctlCh':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_ioctl.c:1553:14: error: this statement may fall through [-Werror=implicit-fallthrough=]
 1553 |          ret = TAPI_statusNotSupported;
      |          ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_ioctl.c:1555:7: note: here
 1555 |       default:
      |       ^~~~~~~
cc1: all warnings being treated as errors

/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c: In function 'cid_fsm_alert_exec':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:2037:31: error: this statement may fall through [-Werror=implicit-fallthrough=]
 2037 |          pTxData->nCidSubState++;
      |          ~~~~~~~~~~~~~~~~~~~~~^~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:2039:7: note: here
 2039 |       case 1:
      |       ^~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:2053:31: error: this statement may fall through [-Werror=implicit-fallthrough=]
 2053 |          pTxData->nCidSubState++;
      |          ~~~~~~~~~~~~~~~~~~~~~^~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:2055:7: note: here
 2055 |       case 2:
      |       ^~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:2070:31: error: this statement may fall through [-Werror=implicit-fallthrough=]
 2070 |          pTxData->nCidSubState++;
      |          ~~~~~~~~~~~~~~~~~~~~~^~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:2072:7: note: here
 2072 |       default:
      |       ^~~~~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c: In function 'cid_prepare_data':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:1501:13: error: this statement may fall through [-Werror=implicit-fallthrough=]
 1501 |          if (IFX_TAPI_CID_HM_ONHOOK == pTxData->txHookMode)
      |             ^
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:1509:7: note: here
 1509 |       default:
      |       ^~~~~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:1531:16: error: this statement may fall through [-Werror=implicit-fallthrough=]
 1531 |             if (IFX_TAPI_CID_STD_KPN_DTMF_FSK != pConfData->nStandard)
      |                ^
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:1535:10: note: here
 1535 |          case IFX_TAPI_CID_GEN_TYPE_FSK:
      |          ^~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c: In function 'cid_lookup_transparent':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:1425:10: error: this statement may fall through [-Werror=implicit-fallthrough=]
 1425 |          cidfsk_set_tx_time (pTxData, &pConfData->TapiCidFskConf);
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:1427:7: note: here
 1427 |       case IFX_TAPI_CID_GEN_TYPE_DTMF:
      |       ^~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c: In function 'TAPI_Phone_CID_Stop_Tx':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:3445:10: error: this statement may fall through [-Werror=implicit-fallthrough=]
 3445 |          switch (pTxData->nAlertType)
      |          ^~~~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:3461:7: note: here
 3461 |       case TAPI_CID_STATE_ACK:
      |       ^~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:3463:13: error: this statement may fall through [-Werror=implicit-fallthrough=]
 3463 |          if (ptr_chk(pDrvCtx->SIG.DTMFD_Override, ""))
      |             ^
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:3472:7: note: here
 3472 |       case TAPI_CID_STATE_SENDING:
      |       ^~~~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c: In function 'TAPI_Phone_Get_CidRxData':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:4060:10: error: this statement may fall through [-Werror=implicit-fallthrough=]
 4060 |       if (IFX_Fifo_isEmpty(&(pCidRx->TapiCidRxFifo)))
      |          ^
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_xway/drv_tapi-3.13.0/src/drv_tapi_cid.c:4069:4: note: here
 4069 |    default:
      |    ^~~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

2 files changed, 126 insertions, 0 deletions

diff --git a/package/kernel/lantiq/ltq-tapi/patches/600-fix-compilation-warning-switch-fallthrough.patch b/package/kernel/lantiq/ltq-tapi/patches/600-fix-compilation-warning-switch-fallthrough.patch
new file mode 100644
index 0000000000..bb27ff355a
--- /dev/null
+++ b/package/kernel/lantiq/ltq-tapi/patches/600-fix-compilation-warning-switch-fallthrough.patch
@@ -0,0 +1,114 @@
+--- a/src/drv_tapi_cid.c
++++ b/src/drv_tapi_cid.c
+@@ -1424,6 +1424,8 @@ static IFX_int32_t cid_lookup_transparent(TAPI_CIDTX_DATA_t *pTxData,
+ 
+          cidfsk_set_tx_time (pTxData, &pConfData->TapiCidFskConf);
+ 
++         fallthrough;
++
+       case IFX_TAPI_CID_GEN_TYPE_DTMF:
+          memcpy (pTxData->cidBuf[IFX_TAPI_CID_GEN_TYPE_DTMF].pBuf,
+             pMessage[0].transparent.data, pMessage[0].transparent.len);
+@@ -1497,6 +1499,7 @@ static IFX_int32_t cid_prepare_data(TAPI_CHANNEL *pChannel,
+          break;
+       case IFX_TAPI_CID_STD_KPN_DTMF:
+          /*lint -fallthrough*/
++         fallthrough;
+       case IFX_TAPI_CID_STD_KPN_DTMF_FSK:
+          if (IFX_TAPI_CID_HM_ONHOOK == pTxData->txHookMode)
+          {
+@@ -1506,6 +1509,7 @@ static IFX_int32_t cid_prepare_data(TAPI_CHANNEL *pChannel,
+          }
+          /* KPN CID Type 2 (off-hook) always using FSK */
+          /*lint -fallthrough*/
++         fallthrough;
+       default:
+          pTxData->cidGenType = IFX_TAPI_CID_GEN_TYPE_FSK;
+          break;
+@@ -1532,6 +1536,7 @@ static IFX_int32_t cid_prepare_data(TAPI_CHANNEL *pChannel,
+                break;
+ 
+             /*lint -fallthrough*/
++            fallthrough;
+          case IFX_TAPI_CID_GEN_TYPE_FSK:
+ 
+             if (IFX_TAPI_CID_STD_NTT == pConfData->nStandard)
+@@ -2036,6 +2041,7 @@ static FSM_STATUS_t cid_fsm_alert_exec(TAPI_CHANNEL *pChannel)
+          }
+          pTxData->nCidSubState++;
+          /*lint -fallthrough*/
++         fallthrough;
+       case 1:
+          if (pConfData->OSIoffhook && pConfData->nSAStone)
+          {
+@@ -2052,6 +2058,7 @@ static FSM_STATUS_t cid_fsm_alert_exec(TAPI_CHANNEL *pChannel)
+          }
+          pTxData->nCidSubState++;
+          /*lint -fallthrough*/
++         fallthrough;
+       case 2:
+          if (pConfData->nSAStone)
+          {
+@@ -2069,6 +2076,7 @@ static FSM_STATUS_t cid_fsm_alert_exec(TAPI_CHANNEL *pChannel)
+          }
+          pTxData->nCidSubState++;
+          /*lint -fallthrough*/
++         fallthrough;
+       default:
+          /* Play CAS tone on data channel, use unprotected function, protection
+             is done around cid_fsm_alert_exec */
+@@ -3458,6 +3466,7 @@ IFX_int32_t TAPI_Phone_CID_Stop_Tx(TAPI_CHANNEL *pChannel)
+          }
+          /* deliberately fall through */
+          /*lint -fallthrough*/
++         fallthrough;
+       case TAPI_CID_STATE_ACK:
+          /* deactivate the DTMF override - last two params are ignored */
+          if (ptr_chk(pDrvCtx->SIG.DTMFD_Override, ""))
+@@ -3469,6 +3478,7 @@ IFX_int32_t TAPI_Phone_CID_Stop_Tx(TAPI_CHANNEL *pChannel)
+          }
+          /* deliberately fall through */
+          /*lint -fallthrough*/
++         fallthrough;
+       case TAPI_CID_STATE_SENDING:
+          TAPI_Stop_Timer (pTxData->CidTimerID);
+          break;
+@@ -4066,6 +4076,7 @@ IFX_int32_t TAPI_Phone_Get_CidRxData (TAPI_CHANNEL *pChannel,
+       /* If the fifo is not empty take the data from the fifo first. */
+       /* deliberately fallthrough to default case */
+       /*lint -fallthrough*/
++      fallthrough;
+    default:
+       /* Allow readout of data in all other states not handled above.
+          When there is no data in the fifo TAPI_statusErr is returned. */
+--- a/src/drv_tapi_dial.c
++++ b/src/drv_tapi_dial.c
+@@ -319,6 +319,8 @@ static IFX_void_t ifx_tapi_dial_OnTimer(Timer_ID Timer, IFX_ulong_t nArg)
+          /* NOTE: the "break" statement has been intentionally omitted */
+          /*lint -fallthrough */
+ 
++         fallthrough;
++
+       case TAPI_HOOK_STATE_DIAL_L_VAL:
+          /* digit_l_min expires: onhook has lasted long enough to be a
+             certain low pulse (not noise). The next state is the overlap with
+--- a/src/drv_tapi_event.c
++++ b/src/drv_tapi_event.c
+@@ -1545,6 +1545,7 @@ IFX_int32_t IFX_TAPI_Event_Dispatch_ProcessCtx(IFX_TAPI_EXT_EVENT_PARAM_t*
+                   /**\todo put in device fifo */
+                   pEvent->ch = IFX_TAPI_DEVICE_CH_NUMBER;
+                   /*lint -fallthrough */
++                  fallthrough;
+                case  IFX_TAPI_ERRSRC_LL_CH:
+                   pEvent->data.value |= IFX_TAPI_ERRSRC_LL;
+                   break;
+--- a/src/drv_tapi_ioctl.c
++++ b/src/drv_tapi_ioctl.c
+@@ -1552,6 +1553,7 @@ static IFX_int32_t  TAPI_IoctlCh (IFX_TAPI_DRV_CTX_t* pDrvCtx,
+       /* Dial Services */
+          ret = TAPI_statusNotSupported;
+          /*lint -fallthrough*/
++         fallthrough;
+       default:
+          bHandled = IFX_FALSE;
+          break;
diff --git a/package/kernel/lantiq/ltq-tapi/patches/601-fix-compilation-warning-ret-not-handled.patch b/package/kernel/lantiq/ltq-tapi/patches/601-fix-compilation-warning-ret-not-handled.patch
new file mode 100644
index 0000000000..b97ced30f8
--- /dev/null
+++ b/package/kernel/lantiq/ltq-tapi/patches/601-fix-compilation-warning-ret-not-handled.patch
@@ -0,0 +1,12 @@
+--- a/src/drv_tapi_ioctl.c
++++ b/src/drv_tapi_ioctl.c
+@@ -702,7 +702,8 @@ static IFX_int32_t TAPI_IoctlDev (IFX_TAPI_DRV_CTX_t* pDrvCtx,
+ 
+                if (ret == TAPI_statusOk || ret == 1)
+                {
+-                  copy_to_user ((IFX_void_t*)ioarg, p_tmp, sizeof(IFX_TAPI_CAP_t));
++                  if (copy_to_user ((IFX_void_t*)ioarg, p_tmp, sizeof(IFX_TAPI_CAP_t)))
++                     ret = TAPI_statusErrKernCpy;
+                }
+             }
+             TAPI_OS_Free (p_tmp);