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This change reverts most of commit 60724ca59eda766a30be57aec6b49bc3e2bead91 [MIPS: IP checksums: Remove unncessary .set pseudos] that introduced warnings with the CPU_DADDI_WORKAROUNDS option set: arch/mips/lib/csum_partial.S: Assembler messages: arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3" [...] arch/mips/lib/csum_partial.S:577: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:577: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:577: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3" arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3" [and so on, and so on...] The warnings are benign and good code is produced regardless because no macros that'd use the assembler's temporary register are involved, however the `.set noat' directives removed by the commit referred are crucial to guarantee this is still going to be the case after any changes in the future. Therefore they need to be brought back to place which this change does. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6686/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>