diff mbox series

[3/4] parisc: checksum: Remove folding from csum_partial

Message ID 20240221-parisc_use_generic_checksum-v1-3-ad34d895fd1b@rivosinc.com
State New
Headers
Series parisc: checksum: Use generic implementations and optimize checksum |

Commit Message

Charlie Jenkins Feb. 22, 2024, 2:37 a.m. UTC 
  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@rivosinc.com>
---
 arch/parisc/lib/checksum.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

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);