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As Vincent noticed, the y2038 conversion of semtimedop in linux-5.1 broke when commit00bf25d693("y2038: use time32 syscall names on 32-bit") changed all system calls on all architectures that take a 32-bit time_t to point to the _time32 implementation, but left out semtimedop in the asm-generic header. This affects all 32-bit architectures using asm-generic/unistd.h: h8300, unicore32, openrisc, nios2, hexagon, c6x, arc, nds32 and csky. The notable exception is riscv32, which has dropped support for the time32 system calls entirely. Reported-by: Vincent Chen <[email protected]> Cc: [email protected] Cc: Vincent Chen <[email protected]> Cc: Greentime Hu <[email protected]> Cc: Yoshinori Sato <[email protected]> Cc: Guan Xuetao <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Jonas Bonn <[email protected]> Cc: Stefan Kristiansson <[email protected]> Cc: Ley Foon Tan <[email protected]> Cc: Richard Kuo <[email protected]> Cc: Mark Salter <[email protected]> Cc: Aurelien Jacquiot <[email protected]> Cc: Guo Ren <[email protected]> Fixes:00bf25d693("y2038: use time32 syscall names on 32-bit") Signed-off-by: Arnd Bergmann <[email protected]>