kernel: ltq-adsl: add patch fixing compilation warning

Add patch fixing compilation warning due to not handled switch
fallthrough, stack limit and compilation warning in g997 module.
Fix compilation warning:
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/pm/drv_dsl_cpe_pm_core.c: In function 'DSL_DRV_PM_CountersReset':
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/pm/drv_dsl_cpe_pm_core.c:2277:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
 2277 |    if (ResetType == DSL_PM_RESET_HISTORY)
      |       ^
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/pm/drv_dsl_cpe_pm_core.c:2280:4: note: here
 2280 |    case DSL_PM_RESET_TOTAL:
      |    ^~~~
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/pm/drv_dsl_cpe_pm_core.c:2284:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
 2284 |    if (ResetType == DSL_PM_RESET_TOTAL)
      |       ^
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/pm/drv_dsl_cpe_pm_core.c:2287:4: note: here
 2287 |    case DSL_PM_RESET_HISTORY_SHOWTIME:
      |    ^~~~
cc1: all warnings being treated as errors

/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/device/drv_dsl_cpe_device_danube.c: In function 'DSL_DRV_DEV_AutobootHandleTraining':
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/device/drv_dsl_cpe_device_danube.c:3189:19: error: this statement may fall through [-Werror=implicit-fallthrough=]
 3189 |                if (nErrCode != DSL_SUCCESS)
      |                   ^
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/device/drv_dsl_cpe_device_danube.c:3197:13: note: here
 3197 |             case DSL_LINESTATE_IDLE:
      |             ^~~~
cc1: all warnings being treated as errors

/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/g997/drv_dsl_cpe_api_g997_danube.c: In function 'DSL_DRV_DEV_G997_PowerManagementStateForcedTrigger':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/g997/drv_dsl_cpe_api_g997_danube.c:2532:52: error: bitwise comparison always evaluates to false [-Werror=tautological-compare]
 2532 |                      else if (((nVal >> 4) & 0x15) == 0x9)
      |                                                    ^~
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/g997/drv_dsl_cpe_api_g997_danube.c: In function 'DSL_DRV_DEV_G997_DeltHlogGet':
/home/ansuel/openwrt-ansuel/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-dsl-ase/drv_dsl_cpe_api-3.24.4.4/src/g997/drv_dsl_cpe_api_g997_danube.c:2108:1: error: the frame size of 1056 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
 2108 | }
      | ^
cc1: all warnings being treated as errors

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

3 files changed, 127 insertions, 0 deletions

diff --git a/package/kernel/lantiq/ltq-adsl/patches/201-fix-compilation-warning-fallthrough.patch b/package/kernel/lantiq/ltq-adsl/patches/201-fix-compilation-warning-fallthrough.patch
new file mode 100644
index 0000000000..dfaf29f449
--- /dev/null
+++ b/package/kernel/lantiq/ltq-adsl/patches/201-fix-compilation-warning-fallthrough.patch
@@ -0,0 +1,36 @@
+--- a/src/pm/drv_dsl_cpe_pm_core.c
++++ b/src/pm/drv_dsl_cpe_pm_core.c
+@@ -2274,16 +2274,18 @@ 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, 0x0, 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
+       nErrCode = DSL_DRV_PM_HistoryDelete(pContext, EpData.pHistShowtime );
+--- a/src/device/drv_dsl_cpe_device_danube.c
++++ b/src/device/drv_dsl_cpe_device_danube.c
+@@ -3193,7 +3193,7 @@ DSL_Error_t DSL_DRV_DEV_AutobootHandleTraining(
+                      DSL_DEV_NUM(pContext)));
+                }
+ #endif /* INCLUDE_DSL_DELT*/
+-            /* Pass through */
++               fallthrough ;
+             case DSL_LINESTATE_IDLE:
+ #if defined(INCLUDE_DSL_PM) && defined(INCLUDE_DSL_CPE_PM_LINE_COUNTERS)
+                if ( (pContext->bGotFullInit == DSL_TRUE) &&
diff --git a/package/kernel/lantiq/ltq-adsl/patches/202-g997_danube-dynamically-allocate-hlogdata.patch b/package/kernel/lantiq/ltq-adsl/patches/202-g997_danube-dynamically-allocate-hlogdata.patch
new file mode 100644
index 0000000000..c3b1047a2a
--- /dev/null
+++ b/package/kernel/lantiq/ltq-adsl/patches/202-g997_danube-dynamically-allocate-hlogdata.patch
@@ -0,0 +1,65 @@
+--- a/src/g997/drv_dsl_cpe_api_g997_danube.c
++++ b/src/g997/drv_dsl_cpe_api_g997_danube.c
+@@ -1984,41 +1984,53 @@ DSL_Error_t DSL_DRV_DEV_G997_DeltHlogGet(
+       {
+          if (nDirection == DSL_DOWNSTREAM)
+          {
+-            DSL_G997_DeltHlogData_t HlogData;
++            DSL_G997_DeltHlogData_t *HlogData;
+ 
+-            memset(&HlogData, 0x0, sizeof(DSL_G997_DeltHlogData_t));
++            HlogData = kzalloc(sizeof(*HlogData), GFP_KERNEL);
++            if (!HlogData)
++            {
++               DSL_DEBUG(DSL_DBG_ERR,
++                  (pContext, "DSL[%02d]: ERROR - Alloc HlogData failed!"DSL_DRV_CRLF,
++                  DSL_DEV_NUM(pContext)));
++               return DSL_ERR_MEMORY;
++            }
++
++            memset(HlogData, 0x0, sizeof(DSL_G997_DeltHlogData_t));
+ 
+             /* Get SHOWTIME Hlog values*/
+             nErrCode = DSL_DRV_DANUBE_G997_DeltHlogGet(
+-                          pContext, nDirection, &HlogData);
++                          pContext, nDirection, HlogData);
+             if (nErrCode != DSL_SUCCESS)
+             {
+                DSL_DEBUG(DSL_DBG_ERR,
+                   (pContext, "DSL[%02d]: ERROR - Showtime Hlog get failed!"DSL_DRV_CRLF,
+                   DSL_DEV_NUM(pContext)));
++               kfree(HlogData);
+                return nErrCode;
+             }
+ 
+             /* if actual group size != 1, values should be spread */
+-            if (HlogData.nGroupSize != 1)
++            if (HlogData->nGroupSize != 1)
+             {
+                nErrCode = DSL_DRV_DANUBE_G997_DeltValuesSpread(
+-                             0x1, HlogData.nGroupSize, HlogData.deltHlog.nNumData,
+-                             HlogData.deltHlog.nNSCData, pData->deltHlog.nNSCData);
++                             0x1, HlogData->nGroupSize, HlogData->deltHlog.nNumData,
++                             HlogData->deltHlog.nNSCData, pData->deltHlog.nNSCData);
+ 
+                if (nErrCode == DSL_SUCCESS)
+                {
+                   pData->deltHlog.nNumData = 
+-                     (DSL_uint16_t)(HlogData.deltHlog.nNumData * HlogData.nGroupSize);
++                     (DSL_uint16_t)(HlogData->deltHlog.nNumData * HlogData->nGroupSize);
+                   pData->nGroupSize        = 1;
+-                  pData->nMeasurementTime  = HlogData.nMeasurementTime;
++                  pData->nMeasurementTime  = HlogData->nMeasurementTime;
+                }
+             }
+             else
+             {
+                /* No spread needed, copy data*/
+-               memcpy(pData, &HlogData, sizeof(DSL_G997_DeltHlogData_t));
++               memcpy(pData, HlogData, sizeof(DSL_G997_DeltHlogData_t));
+             }
++
++            kfree(HlogData);
+          }
+          else
+          {
diff --git a/package/kernel/lantiq/ltq-adsl/patches/203-g997_danube-fix-compilation-warning.patch b/package/kernel/lantiq/ltq-adsl/patches/203-g997_danube-fix-compilation-warning.patch
new file mode 100644
index 0000000000..c6a0e70f1f
--- /dev/null
+++ b/package/kernel/lantiq/ltq-adsl/patches/203-g997_danube-fix-compilation-warning.patch
@@ -0,0 +1,26 @@
+--- a/src/g997/drv_dsl_cpe_api_g997_danube.c
++++ b/src/g997/drv_dsl_cpe_api_g997_danube.c
+@@ -2512,6 +2524,7 @@ DSL_Error_t DSL_DRV_DEV_G997_PowerManagementStateForcedTrigger(
+                   else
+                   {
+                      /* read L3 request failure reason */
++                     DSL_uint8_t nErrCodeL3;
+                      nErrCode = DSL_DRV_DANUBE_CmvRead(pContext, DSL_CMV_GROUP_STAT,
+                         DSL_CMV_ADDRESS_STAT_L3_FAILURE_REASON, 0, 1, &nVal);
+                      DSL_DEBUG(DSL_DBG_MSG,
+@@ -2525,11 +2538,13 @@ DSL_Error_t DSL_DRV_DEV_G997_PowerManagementStateForcedTrigger(
+                         nErrCode = DSL_ERR_MSG_EXCHANGE;
+                         break;
+                      }
+-                     if (((nVal >> 4) & 0x15) == 0x5)
++
++                     nErrCodeL3 = (nVal >> 4) & 0x15;
++                     if (nErrCodeL3 == 0x5)
+                      {
+                         nErrCode = DSL_ERR_L3_NOT_IN_L0;
+                      }
+-                     else if (((nVal >> 4) & 0x15) == 0x9)
++                     else if (nErrCodeL3 == 0x9)
+                      {
+                         nErrCode = DSL_ERR_L3_TIMED_OUT;
+                      }