On Wed, Feb 21, 2024 at 06:37:13PM -0800, Charlie Jenkins wrote:
> The parisc implementation of csum_partial previously folded the result
> into 16 bits instead of returning all 32 bits and letting consumers like
> ip_compute_csum do the folding. Since ip_compute_csum no longer depends
> on this requirement, remove the folding so that the parisc
> implementation operates the same as other architectures.
>
> Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> arch/parisc/lib/checksum.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/arch/parisc/lib/checksum.c b/arch/parisc/lib/checksum.c
> index 05f5ca4b2f96..eaa660491e24 100644
> --- a/arch/parisc/lib/checksum.c
> +++ b/arch/parisc/lib/checksum.c
> @@ -95,14 +95,11 @@ unsigned int do_csum(const unsigned char *buff, int len)
> /*
> * computes a partial checksum, e.g. for TCP/UDP fragments
> */
> -/*
> - * why bother folding?
> - */
> __wsum csum_partial(const void *buff, int len, __wsum sum)
> {
> unsigned int result = do_csum(buff, len);
> addc(result, sum);
> - return (__force __wsum)from32to16(result);
> + return (__force __wsum)result;
> }
>
> EXPORT_SYMBOL(csum_partial);
>
> --
> 2.34.1
>
