On Wed, Mar 05, 2025 at 12:02:13PM +0800, lihuisong (C) wrote: > > 在 2025/3/3 18:51, Sudeep Holla 写道: > > The Sparse static checker flags a type mismatch warning related to > > endianness conversion: > > > > | warning: incorrect type in argument 1 (different base types) > > | expected restricted __le32 const [usertype] *p > > | got unsigned int * > > > > This is because an explicit endianness conversion (le32_to_cpu()) was > > applied unnecessarily to a pcc_hdr.flags field that is already in > > little-endian format. > > > > The PCC driver is only enabled on little-endian kernels due to its > > dependency on ACPI and EFI, making the explicit conversion unnecessary. > How to confirm ACPI works only on little-endian? Sorry I didn't notice this question. ACPI depends on ARCH_SUPPORTS_ACPI and it is selected only from EFI which is disabled if CPU_BIG_ENDIAN=y -- Regards, Sudeep
