Commit c2d85bc1 authored Dec 17, 2013 by Leonid Yegoshin Committed by Ralf Baechle Mar 26, 2014

MIPS: asm: checksum: Add MIPS specific csum_and_copy_from_user function



A MIPS specific csum_and_copy_from_user function is necessary because
the generic one from include/net/checksum.h will not work for EVA.
This is because the generic one will link to symbols from lib/checksum.c
which are not EVA aware.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

parent fb316913

arch/mips/include/asm/checksum.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -54,6 +54,20 @@ __wsum csum_partial_copy_from_user(const void __user src, void dst, int len,
		len, sum, err_ptr);
		}

		#define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER
		static inline
		__wsum csum_and_copy_from_user(const void __user src, void dst,
		int len, __wsum sum, int *err_ptr)
		{
		if (access_ok(VERIFY_READ, src, len))
		return csum_partial_copy_from_user(src, dst, len, sum,
		err_ptr);
		if (len)
		*err_ptr = -EFAULT;

		return sum;
		}

		/*
		* Copy and checksum to user
		*/