[U-Boot-Users] mvbc_p board: build warnings

Hi,

I'm trying to clean up the build warnings for the mvbc_p board. I've succeded with all but this one:

mvbc_p.c: In function 'mvbc_init_gpio': mvbc_p.c:124: warning: dereferencing type-punned pointer will break strict-aliasing rules

This relates to the following code:

115 out_be32(&gpio->simple_ddr, SIMPLE_DDR); 116 out_be32(&gpio->simple_dvo, SIMPLE_DVO); 117 out_be32(&gpio->simple_ode, SIMPLE_ODE); 118 out_be32(&gpio->simple_gpioe, SIMPLE_GPIOEN); <== volatile u8 outo_gpioe; 119 120 out_be32((u32*)&gpio->sint_ode, SINT_ODE); <== volatile u8 sint_ode; 121 out_be32((u32*)&gpio->sint_ddr, SINT_DDR); <== volatile u8 sint_ddr; 122 out_be32((u32*)&gpio->sint_dvo, SINT_DVO); <== volatile u8 sint_dvo; 123 out_be32((u32*)&gpio->sint_inten, SINT_INTEN); <== volatile u8 sint_inten; 124 out_be32((u32*)&gpio->sint_itype, SINT_ITYPE); <== volatile u16 sint_itype; 125 out_be32((u32*)&gpio->sint_gpioe, SINT_GPIOEN); <== volatile u8 outo_gpioe;

I don't know why the warning is only issued for the "u16" type and not also for the "u8" ones, but anyway: Is the casting to "u32*" and using out_be32() here really correct?

I would expect to see some out_be8() and one out_be16() here?

Best regards,

Wolfgang Denk