warning: #191-D: type qualifier is meaningless on cast type

I have this line of code: pcTraceBuffer = ( volatile signed portCHAR * volatile )pcBuffer; it compiled with the previous version without warning. with the new Keil/Realview tool, I got a warning...
warning: #191-D: type qualifier is meaningless on cast type

typedef union _ldopctl_t_ { INT32U Word; struct { INT32U vadj : 6; INT32U reserved : 26; }Bits; }LDO_Ctrl_struct, *pLDO_Ctrl_struct; #define LDO_250V 0x00 #define reg(x, y) (*((volatile x)(y...
warning: #191-D: type qualifier is meaningless on cast type

I have this line of code: pcTraceBuffer = ( volatile signed portCHAR * volatile )pcBuffer; it compiled with the previous version without warning. with the new Keil/Realview tool, I got a warning...
warning: #191-D: type qualifier is meaningless on cast type

typedef union _ldopctl_t_ { INT32U Word; struct { INT32U vadj : 6; INT32U reserved : 26; }Bits; }LDO_Ctrl_struct, *pLDO_Ctrl_struct; #define LDO_250V 0x00 #define reg(x, y) (*((volatile x)(y...
type qualifier on return type is meaningless

I ported a a firmware from IAR Embedded Workbench to Kiel version 4 I get this warning after building the project in Kiel but not in IAR Warning: #815-D: type qualifier on return type is meaningless...