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This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since m68k doesn't select ARCH_HAS_SG_CHAIN, it is not necessary to use for_each_sg() in order to loop over each sg element. But this can help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Geert Uytterhoeven <[email protected]>