On Mon, May 15, 2023 at 11:27:35AM +0800, Jia Jie Ho wrote: > > I've added COMPILE_TEST in the Kconfig, then ran make W=1, sparse and smatch. > However it did not produce the error message. I guess you weren't testing on a 64-bit platform. BIT(2) is an unsigned long, so ~BIT(2) is 64-bit long on 64-bit platforms. You're trying to feed it into writel which takes a 32-bit value, hence the warning. If you have to use the BIT macro, then you need to cast the result to u32: #define STARFIVE_IE_MASK_HASH_DONE ((u32)BIT(2)) But it's probably a lot clearer if you do it as: #define STARFIVE_IE_MASK_HASH_DONE 0x4 Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
