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 -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: [EMAIL PROTECTED] "In Christianity neither morality nor religion come into contact with reality at any point." - Friedrich Nietzsche ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
