drm/amd/pm: suppress compile warnings about possible unaligned accesses

Suppress the following compile warnings:
>> drivers/gpu/drm/amd/amdgpu/../pm/swsmu/inc/smu_v11_0_pptable.h:163:17:
warning: field smc_pptable within 'struct smu_11_0_powerplay_table' is
less aligned than 'PPTable_t' and is usually due to 'struct smu_11_0_powerplay_table'
being packed, which can lead to unaligned accesses [-Wunaligned-access]
         PPTable_t smc_pptable;                        //PPTable_t in smu11_driver_if.h
                   ^
   1 warning generated.
--
>> drivers/gpu/drm/amd/amdgpu/../pm/swsmu/inc/smu_v11_0_7_pptable.h:193:17:
warning: field smc_pptable within 'struct smu_11_0_7_powerplay_table' is
less aligned than 'PPTable_t' and is usually due to 'struct smu_11_0_7_powerplay_table'
being packed, which can lead to unaligned accesses [-Wunaligned-access]
         PPTable_t smc_pptable;                        //PPTable_t in smu11_driver_if.h
                   ^
   1 warning generated.
--
>> drivers/gpu/drm/amd/amdgpu/../pm/swsmu/inc/smu_v13_0_pptable.h:161:12:
warning: field smc_pptable within 'struct smu_13_0_powerplay_table' is less aligned than
'PPTable_t' and is usually due to 'struct smu_13_0_powerplay_table' being packed, which
can lead to unaligned accesses [-Wunaligned-access]
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/inc/smu_v11_0_7_pptable.h

@@ -22,6 +22,7 @@
 #ifndef SMU_11_0_7_PPTABLE_H
 #define SMU_11_0_7_PPTABLE_H
 
+#pragma pack(push, 1)
 
 #define SMU_11_0_7_TABLE_FORMAT_REVISION                  15
 
@@ -139,7 +140,7 @@ struct smu_11_0_7_overdrive_table
     uint32_t max[SMU_11_0_7_MAX_ODSETTING];                   //default maximum settings
     uint32_t min[SMU_11_0_7_MAX_ODSETTING];                   //default minimum settings
     int16_t  pm_setting[SMU_11_0_7_MAX_PMSETTING];            //Optimized power mode feature settings
-} __attribute__((packed));
+};
 
 enum SMU_11_0_7_PPCLOCK_ID {
     SMU_11_0_7_PPCLOCK_GFXCLK = 0,
@@ -166,7 +167,7 @@ struct smu_11_0_7_power_saving_clock_table
     uint32_t count;                                           //power_saving_clock_count = SMU_11_0_7_PPCLOCK_COUNT
     uint32_t max[SMU_11_0_7_MAX_PPCLOCK];                       //PowerSavingClock Mode Clock Maximum array In MHz
     uint32_t min[SMU_11_0_7_MAX_PPCLOCK];                       //PowerSavingClock Mode Clock Minimum array In MHz
-} __attribute__((packed));
+};
 
 struct smu_11_0_7_powerplay_table
 {
@@ -191,6 +192,8 @@ struct smu_11_0_7_powerplay_table
       struct smu_11_0_7_overdrive_table               overdrive_table;
 
       PPTable_t smc_pptable;                        //PPTable_t in smu11_driver_if.h
-} __attribute__((packed));
+};
+
+#pragma pack(pop)
 
 #endif

drivers/gpu/drm/amd/pm/swsmu/inc/smu_v11_0_pptable.h

@@ -22,6 +22,7 @@
 #ifndef SMU_11_0_PPTABLE_H
 #define SMU_11_0_PPTABLE_H
 
+#pragma pack(push, 1)
 
 #define SMU_11_0_TABLE_FORMAT_REVISION                  12
 
@@ -109,7 +110,7 @@ struct smu_11_0_overdrive_table
     uint8_t  cap[SMU_11_0_MAX_ODFEATURE];                     //OD feature support flags
     uint32_t max[SMU_11_0_MAX_ODSETTING];                     //default maximum settings
     uint32_t min[SMU_11_0_MAX_ODSETTING];                     //default minimum settings
-} __attribute__((packed));
+};
 
 enum SMU_11_0_PPCLOCK_ID {
     SMU_11_0_PPCLOCK_GFXCLK = 0,
@@ -133,7 +134,7 @@ struct smu_11_0_power_saving_clock_table
     uint32_t count;                                           //power_saving_clock_count = SMU_11_0_PPCLOCK_COUNT
     uint32_t max[SMU_11_0_MAX_PPCLOCK];                       //PowerSavingClock Mode Clock Maximum array In MHz
     uint32_t min[SMU_11_0_MAX_PPCLOCK];                       //PowerSavingClock Mode Clock Minimum array In MHz
-} __attribute__((packed));
+};
 
 struct smu_11_0_powerplay_table
 {
@@ -162,6 +163,8 @@ struct smu_11_0_powerplay_table
 #ifndef SMU_11_0_PARTIAL_PPTABLE
       PPTable_t smc_pptable;                        //PPTable_t in smu11_driver_if.h
 #endif
-} __attribute__((packed));
+};
+
+#pragma pack(pop)
 
 #endif

drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0_7_pptable.h

@@ -22,6 +22,8 @@
 #ifndef SMU_13_0_7_PPTABLE_H
 #define SMU_13_0_7_PPTABLE_H
 
+#pragma pack(push, 1)
+
 #define SMU_13_0_7_TABLE_FORMAT_REVISION 15
 
 //// POWERPLAYTABLE::ulPlatformCaps
@@ -194,7 +196,8 @@ struct smu_13_0_7_powerplay_table
     struct smu_13_0_7_overdrive_table overdrive_table;
     uint8_t padding1;
     PPTable_t smc_pptable; //PPTable_t in driver_if.h
-} __attribute__((packed));
+};
 
+#pragma pack(pop)
 
 #endif

drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0_pptable.h

@@ -22,6 +22,8 @@
 #ifndef SMU_13_0_PPTABLE_H
 #define SMU_13_0_PPTABLE_H
 
+#pragma pack(push, 1)
+
 #define SMU_13_0_TABLE_FORMAT_REVISION                  1
 
 //// POWERPLAYTABLE::ulPlatformCaps
@@ -109,7 +111,7 @@ struct smu_13_0_overdrive_table {
 	uint8_t  cap[SMU_13_0_MAX_ODFEATURE];                     //OD feature support flags
 	uint32_t max[SMU_13_0_MAX_ODSETTING];                     //default maximum settings
 	uint32_t min[SMU_13_0_MAX_ODSETTING];                     //default minimum settings
-} __attribute__((packed));
+};
 
 enum SMU_13_0_PPCLOCK_ID {
 	SMU_13_0_PPCLOCK_GFXCLK = 0,
@@ -132,7 +134,7 @@ struct smu_13_0_power_saving_clock_table {
 	uint32_t count;                                           //power_saving_clock_count = SMU_11_0_PPCLOCK_COUNT
 	uint32_t max[SMU_13_0_MAX_PPCLOCK];                       //PowerSavingClock Mode Clock Maximum array In MHz
 	uint32_t min[SMU_13_0_MAX_PPCLOCK];                       //PowerSavingClock Mode Clock Minimum array In MHz
-} __attribute__((packed));
+};
 
 struct smu_13_0_powerplay_table {
 	struct atom_common_table_header header;
@@ -160,6 +162,8 @@ struct smu_13_0_powerplay_table {
 #ifndef SMU_13_0_PARTIAL_PPTABLE
 	PPTable_t smc_pptable;                        //PPTable_t in driver_if.h
 #endif
-} __attribute__((packed));
+};
+
+#pragma pack(pop)
 
 #endif