Christophe Leroy <christophe.le...@csgroup.eu> writes: > Le 01/09/2022 à 10:54, ruanjinjie a écrit : >> [Vous ne recevez pas souvent de courriers de ruanjin...@huawei.com. >> Découvrez pourquoi ceci est important à >> https://aka.ms/LearnAboutSenderIdentification ] >> >> When build Linux kernel, encounter the following warnings: >> >> ./arch/powerpc/sysdev/mpic_msgr.c:230:38: warning: cast removes address >> space '__iomem' of expression >> ./arch/powerpc/sysdev/mpic_msgr.c:230:27: warning: incorrect type in >> assignment (different address spaces) >> >> The data type of msgr->mer and msgr->base are 'u32 __iomem *', but >> converted to 'u32 *' and 'u8 *' directly and cause above warnings, now >> recover their data types to fix these warnings. > > I think the best would be to change MPIC_MSGR_MER_OFFSET to 0x40 and > then drop the casts completely: > > msgr->mer = msgr->base + MPIC_MSGR_MER_OFFSET;
Or: #define MPIC_MSGR_MER_OFFSET (0x100 / sizeof(u32)) To document that it's 0x100 bytes, but the the offset is in units of u32. cheers
